This buffer solution is still heavliy in beta, changes to the design will come out as issues and areas of improvement are identified.
- 4L Air Tight Container
- The one used for the initial design is 4L Container. HOWEVER it was found that the KVP spools had clearance issues. With the help of discord members I am currently looking into alternative options.
- Containers 6.3L Container will fit KVP spools but are significantly larger
- 6x (or 3x) M3x.05 heat set inserts
- 8x M3x8 BHCS
- 3x M3 hex nuts
- 3x M3x8 BHCS
- 1x M5x16 BHCS
- 1x M5 nylon lock nut
- Optional
- Hydrometer
- Silica
- 2x 6x3 magenets
- VHB tape
Spool hanger, filament passthru and buffer are mandatory, desiccant and hydrometer are optional
The mounting locations described below are what I used, due to wide variety of container and spool sizes, your milage may vary. Confirm fitment before drilling holes.
Two variations; one using heat set inserts and the other forms threads in the plastic.
Assembly
- Measure approximately 182mm from the bottom of the container and mark the middle.
- Drill a 1/2" hole
- Insert the Filliment_Passthru_Interior.STL.
- Mark the three fastener holes
- Remove the Filliment_Passthru_Interior.STL and drill (hole size)
- Assemble
Assembly
- Slide the Hanger_Handle.STL into the slot on the Spool_Arm.STL and install the PTFE tube to lock it into place
Mounting
- Measure approximately 119mm from the bottom of the container and mark the middle.
- Drill a 1/8" hole and hang the [a]_Spool_Arm_Exterior.STL using the bottom screw hole.
- Orient the [a]_Spool_Arm_Exterior.STL so that the edges are relatively square to the bottom of the container
- Mark the two remaining holes and drill.
- Mount the Assembly, sandwiching the container in between [a]_Spool_Arm_Exterior.STL and [a]_Spool_Arm_Catch.STL
Catch clearance and longevity of current design
Assembly
- Install the [a]_Buffer_Latch_x4.STLs around the perimeter of the Buffer_Case.STL using a piece of filament as the hinge
- press the bearing insert into the bearing and then the bearing in the Buffer_Wheel.STL
- Install the bowden collet into the buffer case.stl
mounting
- Measure approximately 222mm from the bottom of the container and mark the middle.
- Drill a 1/8" hole and hang the Buffer_Case.STL by the top screw and mark the two remaining holes, then drill
- Before mounting with the final two screws install the Nylon lock nut in the recess in the buffer cover.
Clearances of current design, possibility for future redesign to improve usability
A Simple hydrometer bracket that mounts using a single M3x8 SHCS, installed against the bottom interior surface to prevent it from rotating.
Mounts in a similar fashion to the hydrometer bracket
Press in two 6x3 magnets, mounts to container using VHB tape.