Formbot bed is too thick for the Stealth Nut Block

[Janus303]

We are building the V0.2 kit from FormBot, which comes with a kirigami bed. The Stealth Nut Block part will not fit, even before installing heat set inserts. It may be due to the thickness of the powder coat. I would like to edit that part to make it a little roomier, but I am not seeing the CAD file.

[Kagee]

The nut block is part of Kirigami_V0.2_stealth_chain_release.f3d.

The CAD calls a bed thikness of 2.0 mm and a 20 mm gap. The nut is designed at 2.20mm. What are the measurements on the FormBot kit? LDO kit is a hair's breath below spec.

[Janus303]

The thickness when measured from top to bottom is 2.5mm. The thickness when measured in the middle is 2.3mm. So there is a bit of a bow, but even if it were flat it would be too thick. If it were flat and had no powder coat, it'd probably be right on the money.

[christophmuellerorg]

Ultimately this is an issue of Formbot not producing spec parts and I can only design for parts I have at hand - Formbot never sent me their bed for feedback like LDO did. I am somewhat hesitant to make more variants as the current part count is already confusing people.

[Janus303]

I edited the slot to make it a bit wider which is fine for my purposes. It seems like a long term solution would be to redesign the nut block to be more tolerant of variance in thickness as opposed to making more variants of the part.

edit: we could not make it line up. We’re going to try to get formbot to send a good one.

[SrgntBallistic]

Ultimately this is an issue of Formbot not producing spec parts and I can only design for parts I have at hand - Formbot never sent me their bed for feedback like LDO did. I am somewhat hesitant to make more variants as the current part count is already confusing people.

@christophmuellerorg
I'm planning to buy a couple parts from their web store. Obviously it'd be best for them to work directly with you. But many people buy their kits and will end up posting issues here.

Can I send you one of their bed frames? You can possibly make any changes to printed parts or have disclaimers specifically about the bed?

I posted another issue about the thermal fuse. LMK Thanks

[Janus303]

FWIW, Formbot sent us modified STLs which also did not work. We ended up just buying the LDO bed for $25 and it works perfectly.

[bethouxa]

Hello, FYI this is stil the case, just got a kit and the bed is 2.2mm (+/- 0.05) thick.
Also, the printed parts they provide seems to be the same as yours and does not fit without significant force.