Kiln 1.5.0

Added

• Quotes and ordering, revamped. Ask for a print-service quote and see exactly what you'll pay: printing, the shop's minimum, shipping, and a note that tax is added at checkout. Then place the order and pay on the print service's checkout however is easiest. Card, PayPal, Apple Pay and Google Pay all work. Order status follows your print from paid to delivered.

• Moves stay within your printer's real limits. On Klipper printers, Kiln reads the limits from the printer itself.

• Clearer heat warnings. Kiln tells you when your printer shuts off from heat, and warns about fumes from PTFE-lined hotends.

• Printer details stay current without updating while you're signed in.

• Kiln recognises your printer after its address changes.

• Setup tells you whether the camera answers, without taking a picture.

• Connect an OctoPrint printer without copying a key. Kiln asks OctoPrint for one, and you click Allow there. OctoPrint versions without this still take a pasted key.

• Paid printer tools now work with just the free install. Kiln's servers do the thinking, and the Kiln on your computer does the step on your printer, after showing you each action and why. Fleet routing and material rule checks (food contact, REACH, RoHS, flame, UV) work the same way.

• Round or bevel the edges of a CAD part. Kiln edits the CAD itself and tells you any edge it left sharp.

• Kiln can choose each edge's finish for you (Pro+). It bevels the edges a rounded corner would let sag, and gives screw holes the entry their screw needs. See https://kiln3d.com/pricing.

• Check that a hinge opens before you print it.

• Texture just one part of a model, and painted models keep their colours. Different textures on different parts is Pro+. See https://kiln3d.com/pricing.

• Paint a model by saying which part. Ask Kiln to make the inside red and the handle blue and it knows which surfaces you mean; when a word could mean more than one, it asks.

• Approve a print without leaving your chat, or from your phone. When your AI app can't ask you, Kiln shows a code on your screen to type back; or answer on your phone, where the print waits with a picture you can turn in 3D. Say yes once, or for the next few hours.

• See what your colour changes cost, and how to cut them (Pro+). Business+ also prices in the chance of a reprint. See kiln3d.com/pricing.

• Show any file you already have on the 3D stage. A model or the sliced file about to print — turn it over before you approve it, without remaking or re-slicing anything.

• A look at the camera now settles what's on the plate. Kiln already showed you the feed; now what you see goes on the record, so it stops asking and prints can start again.

• No job goes to a printer whose plate isn't free (Business+). Kiln checks every plate in the fleet before it routes, says which printers have room, and turns a job down as you submit it rather than at the printer. See https://kiln3d.com/pricing.

• Kiln won't slice onto a part left on the plate. It says what's there and how many spots beside it would fit.

• Print a second part beside one that's still on the plate (Pro). On the Bambu A1 for now: the head goes over the part, where the printer's own start routine would drive straight through it. Other printers say why they can't yet. See https://kiln3d.com/pricing.

• A small test print teaches Kiln how your printer moves. Then Free tells you whether a second part fits beside the one on your plate, and Kiln Pro tells you where. See https://kiln3d.com/pricing.

• The 3D stage shows what's already on your plate. The print still standing there shows as itself, by name, beside where your new part would go, with a plain "fits here" or "doesn't fit here".

• Describe a flat part by its rules and Kiln works out the shape. Say where the holes sit relative to the edges and each other, and Kiln finds the exact geometry, tells you plainly what is still loose, and warns you when two rules can't both hold or a hole would break through.

• A flat part you described exports as real CAD. Its holes and rounded corners arrive as true circles and arcs at exactly the size you asked for, so the file a machinist opens matches your dimensions instead of approximating them.

• Say yes once, for a while — from the approval dialog itself. Answer
  "this print only", "the next 2 hours", "the rest of today" or a length you
  type (24 hours at most), and prints on that printer start without asking
  until then — every result says the window is open, closing it is one
  message to your assistant, and every printer at once is Business+.

• Kiln counts your filament-cutter blade's cuts and tells you when it's
  due. Every print, load and colour change Kiln can see counts against the
  maker's own number, and a print start says so when the blade wants
  attention. Kiln Pro adds how long blades really last on machines like
  yours, measured across the community.

• Your printer's own repair guide, one step at a time. Kiln walks you
  through the maker's steps photos, and says so when none are available.

• Home or park the print head, safely. Kiln uses the printer's own moves
  and won't drive through a part it knows is on the plate.

• Purge into the chute, wipe on the pad, heater off after. Bambu A1 today;
  other models refuse until proven on a real machine.

• Printer names people actually type now resolve.

• Kiln checks your printer's own nozzle clumping detection before a print.
  Printer status and the pre-flight say whether it's on, off or automatic, and
  warn when the sliced file, where you placed the part, or the print mode would
  defeat the check. Every Bambu model that has the setting; a reading Kiln
  cannot verify is reported as unknown, never as off.

• The "what's watching this print" summary reflects switches you turned off
  on the machine. A detector your printer reports as off stops being listed
  as watching.

• Taking your printer apart? Ask Kiln first. It tells you what to unplug,
  how many screws to expect and which key fits. Kiln Pro adds which screw goes
  in which hole.

• Watch your print live, not one frame every thirty seconds. Kiln now
  shows a Bambu A1 or P1 camera (or any OctoPrint or Moonraker webcam) as
  live video in your print monitor, and tells you how old the picture is
  so a frozen frame never passes as live. Live video plays only on the
  computer connected to the printer.

• Kiln now checks whether your printer still thinks it has the old nozzle.
  On a Bambu, Klipper, Creality, Prusa or OctoPrint printer it's connected to,
  Kiln reads the nozzle setting that printer holds and tells you when it
  doesn't match the nozzle you recorded.

• See which of your printers disagree with Kiln about their nozzle, worst
  first (Business+). The same nozzle check across every printer Kiln can
  read, in one pass — contradicts, unconfirmed, or unreadable, never a silent
  "fine" — with the ones running abrasive filament ranked first. Served via
  kiln-pro; see https://kiln3d.com/pricing.

• Kiln now tells you where your printer's own nozzle setting lives. Model
  by model, so the machine can be corrected to match the nozzle you actually
  fitted — and where no manufacturer instructions exist, it says so rather
  than guess.

• A burn warning before Kiln sends you to a hot nozzle. Clearing a
  blockage can spray molten filament, so every tier gets told to glove up
  first.

• Kiln notices a fault on your printer even when it didn't start the job.
  Load filament from the printer's own screen and have it fail, and Kiln says
  so instead of waiting to be asked.

• License plate frames now fit EU plates, in both the long and the
  two-line size.

• A food-safe filament is only half the answer. Ask Kiln for anything
  food or a pet will eat from and it now tells you the nozzle matters too —
  standard brass sheds trace lead — and what to print it through instead.

• Ask any product what you can decorate on it (Pro). Every product Kiln
  generates now answers with its own surfaces — a soap dish's underside, a
  pen cup's wall — instead of only the dozen that happened to be listed.

• See what your slicer will print around your part. An Extras toggle on the
  3D stage draws the skirt, brim, supports, raft and prime tower from your
  sliced file, each labelled with its grams — from any slicer that labels its
  paths.

• See what your slicer adds around your part, layer by layer. The layer view
  now draws the skirt, brim, supports and prime tower in the same colours the 3D
  stage gives them, with one toggle to show or hide the lot — and paints every
  path in the filament it actually prints in.

• Load, unload and purge filament from Kiln on most printers. Purging
  doubles as a clog test: Kiln says whether the filament actually came
  through and reads the printer's own error back in plain words. Printers
  whose firmware gives Kiln no way to drive the extruder say so rather than
  pretending.

• Kiln now sees your multi-material unit, whatever brand it is. A Klipper
  printer running Happy Hare or AFC, and a Creality with a CFS, now report what
  is loaded in each slot — and Kiln says plainly when the unit's own tool map,
  not Kiln, decides which slot feeds each tool change.

• Your cloud library shows up on your machine. Designs saved to your Kiln
  account appear next to your local ones, each entry saying which one it came
  from, and can be pulled back down on any machine you're signed in on. Saved
  decorations and reusable features join the listing on Kiln Pro. Served via
  kiln-pro; see https://kiln3d.com/pricing.

• Saved decorations can't hide anymore. The decoration library's listing now
  says when you also have saved decoration presets, and how to see them.

• Show Kiln a photo and it checks its work against your photo, every round.
  Kiln keeps the reference you gave it with the design, so the fifth attempt is
  still measured against what you actually showed it — not against its own
  previous attempt.

• Watch your model change, and see what a conversion loses (Pro+). A
  repair, split, or format change plays out on the object itself — and when
  colors can't survive the new format, you watch them leave instead of
  quietly getting a grey file back.

• Kiln parks clear of your print. When a recovery stops a job, the nozzle
  now moves to a spot proven clear of what's on the plate instead of sitting
  over it — and stays put if it can't prove one.

• When Kiln changes your file's format, it says so. If what comes back
  isn't the format you handed over, the result names what changed, what the
  new format can't hold, and where your untouched original still is.

• The web workshop takes OBJ files now. A dropped OBJ used to render fine
  and then offer no way in — it now goes through the same door as STL and 3MF.

• The mesh checkup reads 3MF. diagnose_mesh said "run this before slicing"
  and then refused one of the two formats slicers eat.

• Four more QIDI printers. The Plus 5, Max 4, Q2C and X-Smart 3. Free tells
  you a material won't work on your machine; Kiln Pro tells you why, and what to
  run instead, plus more depth. See https://kiln3d.com/pricing.

• Tell the Kiln team something. A new Support page in the web app takes
  bugs, ideas, printers you want supported, and questions — or just say it to
  your agent, which can send any of them for you. A person reads every one, and
  you can ask to be emailed when yours is fixed.

• Paint a carved logo and get the logo, not a filled-in blob. Ask for a
  debossed mark in a second color and Kiln paints the carved strokes only — a
  logo with a closed outline keeps its middle in the body color instead of
  flooding solid.

• Give each carved decoration its own color. A model with more than one
  carved mark — a name and a title, a logo and a border — can now take a
  different color per decoration in a single painted model, ready for a
  multi-filament printer. Name the ones you want colored and the rest stay in
  the body color.

• Ask for a bracket, get a bracket. Kiln ships 65 ready-made
  parametric parts — brackets, bins, stands, cases, hooks, jigs,
  clamps — and nothing could find them until now. Describe what you
  need in your own dimensions and your agent offers one, then builds
  it. No API key needed.

• Your logo rides into the CAD file. Put an SVG on a generated product and
  the STEP export carries it as real CAD geometry — same size and depth as the
  print, letter counters and enclosed islands intact. Photo reliefs still
  refuse honestly.

• Print from the web, and say yes once per print. The print page shows the
  part and one Approve button — that press is the yes your printer waits for.
  Free at home; from anywhere through Kiln is Pro. See
  https://kiln3d.com/pricing.

• Kiln can walk you through a cold pull. The temperatures for your exact
  printer, the moment to stop pulling, and what a clean pull looks like — plus
  what maintenance is actually due and why a hot end clogs in the first place.
  Free covers the steps that keep you safe; Kiln Pro adds the procedures and the
  intervals. See https://kiln3d.com/pricing.

• Find out whether your printer watches for fire. Which models have flame
  detection or can drive an extinguisher, what sets it off, and what the printer
  does about it — the alarm, the fans cut to slow it, the laser parked.

• Your AMS can answer questions now. Why filament won't unload after a power
  cut, how hot a unit can safely dry, and what a critical code means — including
  the one that says switch the power off. Free covers the safety answers; Kiln
  Pro adds the full capacity, LED and code reference. See
  https://kiln3d.com/pricing.

• Find out which failures your printer catches on its own. Whether your exact
  model has spaghetti, clumping or air-printing detection — and, where Bambu
  documents it, the firmware it needs and the print modes that silently switch
  it off.

Changed

• A part with pieces floating in mid-air is no longer made. If the code for a part leaves a piece hanging above the bed, Kiln refuses it and says how far that piece is from the rest, so a broken design never reaches the preview or the printer. Separate parts sitting on the bed, and a piece held inside the part, are still made.

• Everything your AI makes stays tied to what you asked for. Kiln Pro also checks the design against it.

• A saved printer's name is never written over by a different printer.

• A printer Kiln doesn't know is held to cautious limits until you confirm its real ones.

• Kiln tells you when it's working with your other printer, instead of calling this one offline.

• kiln register now points you to kiln signin.

• Screw seams on split parts now use a standard screw you can buy (Pro). See https://kiln3d.com/pricing.

• A session that has run out says so everywhere, and signing back in restores your plan. Your plan stays on your account; this machine just needs you to sign in again before anything that uses Kiln's servers — and if it's the computer next to your printer, your AI app and the web monitor now say exactly that instead of calling Bridge offline.

• Name a screw or insert the way you'd say it and get the right hole first time (Pro+). See https://kiln3d.com/pricing.

• Whole-object wrapped textures look better, including on round objects like cups.

• Agreeing to the Terms before you sign in now counts for your account too.

• Cost estimates price each filament as the material your file was sliced for.

• After slicing, the 3D stage shows the file going to your printer. Asking to see it again gives a one-line "already on the stage above" instead of a second identical stage.

• Designs agents write come out rounder.

• Kiln makes multi-colour Bambu files for the A1 only. Single-colour prints, and multi-colour files you slice in Bambu Studio, work on every Bambu as before.

• When Kiln can't reach its servers, it says so in plain words. Every feature that leans on them names which of four things happened — this computer is offline, you're signed out, the servers didn't answer, or they said no — and what to do next.

• A check Kiln couldn't make is never reported as a pass. A pre-flight that can't reach the servers lists the check as not made, instead of quietly leaving it out.

• Kiln tells you when your nozzle crosses a wear milestone. Approaching the end of its life, past the point half of nozzles like it wore out, past the budget: each said once, on every signed-in Kiln, and a print at the budget is refused until you swap it.

• The weight on your printer's screen is for the filament you're actually using. Every slice is weighed with the material you name or the spool your printer reports loaded, and Kiln tells you which one it used.

• Your Bambu is told the filament you're actually printing. It warms up for that filament, and its screen shows the right one.

• Prusa and Duet touchscreens now show the part before it prints. The picture used to appear only on the printer's browser page (PrusaLink, Duet Web Control) while the touchscreen on the printer stayed blank; the screen now gets its own copy. Elegoo files get a preview too.

• Bambu fault codes now come with the cause and the fix. Every code
  your printer is holding — including ones the screen never shows you — is
  explained right where you see it.

• Tell Kiln a Bambu fault code in plain words and it looks it up. If
  Kiln has nothing on that code, it says so instead of guessing.

• The pre-print nozzle check is free; its community half is Pro+.
  Everyone gets the verdict against the curated budget; Kiln Pro adds how
  long that nozzle lasts on that filament across the community.

• You see the print before it starts, from every door — and it starts only when you say go. One yes is one print on one printer, and a time-boxed window exists only when you open it yourself; a yes that covers several printers or the whole fleet is Business+. See https://kiln3d.com/pricing.

• The picture you sign off on is the part on Kiln's stage. The live 3D panel where your app draws one; otherwise the stage picture and a 30-minute viewer link, together — never a plain render — and the record says which pixels you were shown.

• Every print file leaves with a preview and a real weight, or not at all. Your printer's screen or web page shows the part and the filament it will use — Bambu tiles in true colours, Klipper, OctoPrint, PrusaLink and Duet the way each reads it — or Kiln refuses to send it. Printers whose screens show nothing get the weight only.

• The 3D panel never fails silently. When a panel can't load its part you get the viewer link instead, and a restart tells you which open chats need reconnecting.

• A long print is never mistaken for a stuck one. Kiln used to give up
  after two hours and could send the same file again. It now leaves a running
  print alone and tells you when one stops moving. Thanks to @qjkme.

• An emergency stop says whether it landed. Kiln checks the printer really
  stopped, and tells you to stop it by hand when it can't confirm. Stopping
  all your printers reaches every one at once.

• A monitored print no longer reports failure after it started. It says
  the print started, and the first-layer check actually runs. kiln watch
  works again.

• The safety watchdog covers every print Kiln starts, and leaves when that
  print ends. It no longer cancels a print your printer paused itself, like
  a filament runout.

• Bambu's H2D, H2D Pro, H2C and X2D are now supported. Paid tiers add
  per-material guidance for each one, plus additional depth.

• Your colours go to the spools that hold them. Kiln stops rather than
  printing a colour you don't have loaded.

• Your AI assistant can better say what each tier gets.

• History answers say what they cover. Your print, job, failure and model
  histories now say they're this machine's records, and how many entries
  exist in total — so a page of twenty is never mistaken for everything
  you've printed.

• Kiln catches a handle that didn't actually join the body. A part built
  flush against a curved wall only touches it — it looks attached, then
  prints as two loose pieces. Kiln now measures the join and tells you how
  far to sink the part in.

• A printability report now names its placement fault, and says what the
  part's shape scored on its own. When a part is judged unprintable for
  hanging below the plate or overrunning the bed, the report carries a
  stable name for that fault beside the sentence describing it, plus the
  grade the part would have earned sitting correctly. The wording you
  already see is unchanged, word for word — this is what lets a viewer say
  "hangs below the bed" instead of just turning red, and lets anything
  reading the report tell a badly made part from a well made one in the
  wrong place.

Fixed

• A coloured logo on a coloured background carves cleanly.

• Food-safe picks on every install. When something will hold food or touch a mouth, Kiln never suggests a plastic that isn't food safe, on any plan, signed in or not.

• Your plan counts in the terminal too. Kiln on your own computer now reads your Pro or Business plan, so paid limits like assembly part counts lift when you're signed in.

• Elegoo cameras open at the address the printer gives. Kiln asks the printer for its video address instead of guessing one, and says when a feed can't be relayed.

• Cancelling a print on an older USB-connected printer no longer claims it stopped when it didn't. Kiln pauses it, turns the heaters off, and tells you to press Stop on the printer.

• A printer Kiln finds on your network is saved at the port it answered on.

• Kiln's printer network check now works for OctoPrint, Prusa Link, Klipper and Duet printers.

• Manufacturing quotes work again. Our print partner changed how it takes in a model; quotes and ordering are back.

• Rounded CAD parts no longer show as "not closed".

• Holes with bevelled or rounded rims are now found.

• A GLB model, downloaded or generated, now opens on the 3D stage and slices. Kiln saves an STL copy beside the original and never overwrites a file the listing came with.

• A GLB that arrives tiny is read in metres, the unit its format uses. Kiln tells you the size it would be and how to set it; it never rescales on its own.

• A MyMiniFactory file download goes to MyMiniFactory. It used to ask Thingiverse.

• Parts that nearly fill the bed now print instead of being turned away.

• If a part's brim won't fit on the bed, Kiln tells you before printing and suggests a size that does.

• STEP files get the same brim and support decisions as mesh files, wherever you slice.

• Your Bambu's screen shows the same print time Kiln does.

• A STEP file sent straight to slicing shows on the 3D stage, and one too big for your bed says so plainly.

• Convert two CAD files in the same folder and both models survive. Each is named after the file it came from, so a new revision no longer replaces the last one's model.

• A design you import still opens after a restart. Kiln keeps its own copy of the model with the design, instead of pointing at a temporary file your Mac clears.

• Dimensioned drawings work for imported designs, 3MF files and very detailed parts (Business+).

• Texturing a large model no longer times out. The preview now finishes within your assistant's wait.

• Long jobs started from your own computer no longer give up early.

• File details name the right material, print time and layer count for every slicer's files.

• Kiln restarting mid-chat no longer breaks your next request. It used to fail with "Invalid request parameters" and an empty 3D panel.

• Cost and filament estimates for OrcaSlicer and Bambu Studio files now match the slicer.

• Slicing keeps your plate where you approved it, and the preview shows what will actually print.

• Fine-pitch jar lids fit as snugly as the rest.

• Your painted parts look like themselves in every preview. On a machine without a browser Kiln can drive, a multi-colour part used to come back as a flat grey picture; it now gets the same 3D stage look as everything else, in its own colours.

• Preview pictures look like the 3D stage, even without a browser. Undersides are lit, highlights shine, and the brightest edges glow the way the stage draws them — painted parts included.

• Every Bambu printer Kiln supports now starts and finishes each print the way Bambu designed it.

• Tall prints on a Bambu A1 now finish with the head safely clear.

• A Bambu keeps the moves Kiln saved for it through a brief hiccup on Kiln's side. Homing, parking and wiping used to refuse until you were back online, because Kiln dropped the sequence it had saved for your machine.

• A spool on a second AMS unit, or in an AMS HT, is now routed, loaded and reported as the tray it really is. Kiln names every tray the way your printer does.

• A mid-print material change now reaches a spool on a second AMS unit, or in an AMS HT (Pro+).

• A purge or wipe finishes cooling the nozzle even if your assistant stops
  listening. Kiln used to leave the part fan running if the request was
  abandoned mid-routine; the fan now goes off on its own once the nozzle has
  cooled, and a status check finishes the job if Kiln was restarted in
  between.

• Setting a fan or light now needs the setting. A request that arrived
  without a fan speed used to run the fan at full; it is now refused, so an
  intent to turn something off can never turn it on.

• Two printers were misfiled: the Voron Trident and the Creality Hi. Each
  now gets its own correct profile.

• A print started by name is checked before it starts. Kiln reads the file
  back from the printer and refuses one it can't vouch for.

• Command-line filament commands find your configured printer.

• A Bambu AMS no longer reads empty right after a load.

• The Claude Code plugin now connects Kiln. Installing it since 1.3.2
  added a plugin that wired nothing; the same two commands now bring every
  Kiln tool into your session.

• Idle Kiln sessions no longer hog your Bambu printer. It only allows a
  few connections, and background copies of Kiln used to keep them all.

• A printer with every connection taken now says so, instead of
  "unauthorized". A wrong access code is reported right away.

• Skipping the clumping probe for one print no longer turns it off for
  good. Kiln puts the setting back when that print ends, as long as Kiln
  is still running.

• A Bambu microSD card error is now named as one. Kiln used to report it
  as an AMS filament sensor fault.

• No more phantom chamber temperature on open-frame Bambu printers. Some
  Bambus have no chamber sensor; Kiln now says so instead of relaying the
  firmware's placeholder. Enclosed models with a real sensor are unchanged.

• The X1E's heated chamber is now on record. Material advice for it no
  longer treats it as unheated.

• Printer questions no longer answer a different question. Asked
  something Kiln has no verified answer for, it now says so instead of
  returning a related fact with a confident label.

• A logged nozzle change records the nozzle that came out, not the one going
  in (Pro).

• Kiln says when a nozzle change hasn't reached your wear history yet (Pro).

• A nozzle you just fitted no longer reads as one Kiln has been measuring.

• A filament load that fails now gets a narrowed answer, not a list of
  everything it could be (Pro). Tell Kiln what your printer showed you and
  it rules causes out.

• "It won't extrude" no longer gets one answer to a problem that has two
  opposite fixes. Kiln works out which one you have before it tells you
  what to change.

• A printer with a fault no longer reports itself as ready. Kiln leads
  with the fault and says what it is in plain language, with the printer's own
  code beside it to look up.

• A print that hits a recoverable fault is no longer recorded as failed.
  It stays a live print, keeps its progress and whatever is watching it, and
  gets the outcome it actually earned.

• Decorations on frames and rings land where you put them. They could
  drift or be clipped at the edge; a decoration that would carve nothing is
  now refused instead of quietly printing blank.

• A US license plate frame now bolts to the plate it was made for.
  Earlier ones outlined the plate rather than holding it, and their slots
  didn't line up with the studs.

• Magnet safety warnings reach you before you print, whatever you're paying.

• Every capability names the tier it actually needs.

• A see-through logo now carves just the mark on every product, not
  only some.

• A logo carved onto a sloped face comes out whole. On a leaning
  surface, like a phone stand's back panel, only part of the mark was
  being cut.

• A picture with nothing in it is refused instead of carved. A blank
  or fully see-through image used to sink a shallow pool into the part.

• Kiln no longer tells you a temperature it can't vouch for. When your
  printer has stopped reporting, the hotend and bed read "unknown" and point
  you at the machine's own display, instead of showing the last numbers Kiln
  happened to remember.

• Your printer's commands now say whether the printer actually did it.
  Setting a heater, fan, light or speed reports confirmed, sent-but-unconfirmed,
  or failed, instead of "accepted" whether or not it arrived.

• Skipping a failed object waits for the printer to say it skipped it. The
  skip is irreversible for the parts you name, so Kiln now tells you when the
  printer hasn't confirmed it rather than assuming.

• A Bambu error code now gets the explanation that belongs to it. Some
  codes were read as if they came from a different part of the printer's
  reporting, so the plain-English cause could describe the wrong fault.

• Coating and anti-static guidance now answer at every tier.

• Hosted answers arrived missing the part you paid for. Magnet and
  coating advice came back as safety notes only.

• A colour print stops before it starts on a printer that cannot do it.
  Multi-object and multi-copy colour prints used to slice, start, and come out
  entirely in one filament, with the warning arriving after the print began;
  they now refuse up front.

• The wrong-colour check works on every multi-material printer. A file
  asking for a colour nothing loaded can supply is caught the same way
  everywhere, instead of only on a Bambu AMS.

• Kiln stops guessing a material from a spool's name. A slot labelled with
  a product name but no material type was treated as if the name were the
  material, which produced a "material differs" warning against a perfectly
  good filament. An unknown material now reads as unknown.

• Filament-slot options no longer disappear in silence. Asking for a
  specific slot on a printer with no AMS used to succeed while quietly
  ignoring the request; it now says so and stops.

• A tool-change time estimate says when Kiln has not driven that hardware.
  Estimates for an ERCF or Prusa multi-material unit read as fully verified,
  and the one caution that did appear named another brand's hardware — now
  fixed.

• Kiln reads your description the way you wrote it. A magnet worn
  "against bodies" skipped the implanted-device warning that "against the
  body" raised, and a board for "a monitor that watches patients" missed the
  review that "a patient monitor" got.

• A printer that has gone quiet says so, instead of showing its last reading
  as current. Kiln also stops presenting a finished or cancelled job as if it
  were still running, and says which kind of "offline" you're looking at —
  switched off, a wrong access code, or connection slots already taken.

• 3MF files now work everywhere STL does. Measurements, printability, and
  part colours come straight from the file.

• Ask for a colour and Kiln says whether it's loaded. Every colouring tool
  checks your spools as it colours, and a multi-colour print stops rather than
  substitute.

• Kiln starts on Windows again. 1.4.1.1 failed on every command before it ran — serve, doctor, even --help — because of a Unix-only signal read at startup. Slicing on Windows had the same fault one step further in; both are fixed. Thanks @AsteisesDev, who reported it on Windows 11 with the cause pinned, and suggested the sweep that turned up the second one.

• The 3D stage opens painted and multicolor 3MF results on every install. It used to need extra packages most installs never had, so the panel said "preview unavailable" over a file the preview image had already shown correctly.

• The 3D preview opens again on a fresh install. Kiln set up the panel's
  request line but never announced it, so apps that check first showed
  "Preview unavailable" on every make — new installs were affected, existing
  ones were not.

• Turning on authentication no longer locks you out of your own tools.
  Printer fan, light and speed, print recovery, print-service orders,
  publishing and revenue logging refused every request while it was enabled
  — even from a full-access key.

• Your print history comes back after a restart. Finished jobs are read
  from your machine's own records now, so restarting Kiln no longer makes a
  full history look empty.

• A busy queue no longer hides finished prints. Recent history counts
  back through finished jobs only, instead of stopping at whatever the queue
  happened to be holding.

• A part resting flat on the plate is no longer failed for sitting below
  it. A hair of rounding under zero used to trip the placement check and
  drag an otherwise clean report to zero, on a part that was fine.

• A finished make comes back whole. The 3D panel fetches the model on
  its own now, instead of packing it into your reply.

• Resuming a print no longer homes the nozzle into the part. Recovery
  and resume sequences lift clear first and never home downward onto an
  occupied plate. Bed leveling and calibration wait for a clear plate too.

• Kiln Pro won't resume a print into a crash (Pro). If picking up where
  the job stopped would hit what's already printed, it refuses and tells you
  to reprint. Resuming is the Pro part — a fresh print is free and just as
  safe. See https://kiln3d.com/pricing.

• Repair and split keep your model's colors and parts.

• Tell Kiln which printer, and it slices for that printer. With more than
  one machine registered, naming one could use your default printer's settings.
  Fixed.

• "Design this and print it" now actually prints it. The one-call
  design-to-G-code pipeline died quietly at three separate steps — template
  values were never filled in, the 3D file was built through a function that
  didn't exist, and the slicer was called through another one. It now runs
  end to end: describe a part, get sliced G-code for your printer, warm-up
  included.

• Pipeline printing works with your registered printers again. The
  quick-print, reslice, calibrate, and benchmark pipelines all failed at the
  upload step whenever a printer was registered — they looked the printer up
  through an internal path that has never worked. They now use the same
  printer lookup every other tool uses.

• Your calibrated print settings no longer vanish when Kiln adds a brim.
  When the auto-adhesion or per-printer speed logic adjusted a job, the
  tuned values from your calibration profile (pressure advance, flow, and
  friends) were silently dropped from the final slice — even though the
  response said they were applied. They now survive every adjustment.

• An SVG logo no longer vanishes from the print. On a keychain front or a
  pen cup's inside floor, an SVG was quietly skipped and the piece printed
  plain. It now carves as crisp outlines, sized to the face.

• Multicolor models properly print in all their colors, and much faster. A
  model with several colors could come out in one. Now fixed. A hidden speed cap
  is gone too. Needs OrcaSlicer or BambuStudio installed; Kiln finds it on its
  own.

• Decorations land on the face you actually look at. Ask for a texture,
  logo, or engraving without saying where, and Kiln now picks the visible
  side — a tray gets its top, not its hidden underside. Name a face yourself
  and it still goes exactly there. Every decoration tool follows the same
  rule, and it works on 3MF models as well as STL.

• Air-filter warnings on QIDI printers. Several switch the filter off while
  the chamber heats — exactly when ABS and ASA need it.

• Your printer heats up before it starts printing. On OrcaSlicer, a print
  sliced for a Klipper machine — every K1, K2, QIDI, Voron and Ender V3 Kiln
  knows about — went straight from homing to laying down plastic without ever
  being told to heat. Kiln now guarantees the bed and nozzle are up to
  temperature, and the machine has homed, before anything extrudes. On
  PrusaSlicer only one machine was affected — the Vision Miner 22 IDEX, which
  was missing its nozzle wait there too and gained it from the same fix.

• The generic Klipper profile can slice again. It produced no file at all,
  on either slicer, because its start G-code referred to a temperature setting
  in a form neither one accepts.

• Parts that printed beautifully now also work. Twenty-three of
  the ready-made parts had flaws you'd only find after printing. All
  rebuilt and re-tested.

• Your part now sits on your printer's bed in the 3D view, not
  parked in a corner of it.

• Logos and text now land on the side of a cup, box, or vase. Decorating
  a hollow product's side quietly did nothing — the mark went into the empty
  middle instead of the wall. On a round product, Kiln now warns that side art
  is sized to the flat strip it lands on.

• A decoration that didn't take is reported as a failure, and doesn't cost
  you one. Kiln no longer returns an unchanged model as a success, and your
  free monthly decorations are only counted when one actually lands.

• Paint every decoration on a model, not just the last one. Carving a
  second decoration onto an already-decorated model no longer forgets the
  first — painting carved faces now covers every decoration, not just the
  latest. A two-line nameplate used to come out with one line colored, and
  said it had succeeded.

• Printability grades stopped failing models that print fine. Grades now
  follow what your printer actually does.

• Models that can't fit or sit on your bed no longer pass. A part
  hanging below the build plate or wider than your printer used to grade
  an A. Both now fail, and say how to fix it.

• Multicolor and painted models now land on the print bed — yours. A model
  that wasn't already centred produced a 3MF PrusaSlicer quietly refused to
  slice. Kiln now places it on your printer's actual plate, and when something
  genuinely doesn't fit, says so plainly instead of failing silently. An
  off-plate 3MF is caught before slicing now, with how far to move it.

• Your cached designs come back when you ask for them. Saving a design
  to the local cache worked, but listing them — or filtering by material —
  always failed; both now return your designs, most recently used first.

• Saving a model again updates what you told Kiln about it. Re-saving a
  file already in your library kept the original notes and quietly ignored
  new tags or a better prompt; it now takes the new ones.

• A P1 was told it couldn't spot a failed print. The P1P and P1S both catch
  spaghetti and purge-chute pile-ups; Kiln said they had neither.

Security

• Stronger protection against harmful 3MF files.
• Kiln only saves files where it should. A misled AI agent can no longer make Kiln overwrite your settings or startup files. Thanks to Filip Kulig (@KulFilip) for reporting this privately.