Modeling an F key mechanism

[DMA]

Turns out, using MX stabilizers is quite tricky with buckling spring mechanisms: barrel top is 0.6mm above the top plate and all the dust and bread crumbs will go straight under the flipper.

So one either needs to severely redesign key travel limiter or add dust caps to the stems.
Added dust caps today. Not sure they warp when molded - I want to have a flat side so that LED can be added, and post-molding shrinking of the assymmetric part can be problematic.. Will think about travel limiter redesign.

barrel-side.jpg (148.68 KiB) Viewed 28 times

barrel_front.jpg (134.08 KiB) Viewed 28 times

barrel-side.jpg (148.68 KiB) Viewed 28 times

barrel-front-pressed.jpg (118.97 KiB) Viewed 28 times

horizontal plates are, from the top, MX cross base (5.6mm above plate), plate, PCB.

[DMA]

attached dust sleeves to barrels relatively easily. Supporting wall came about 0.75mm thick - should be enough for people not explicitly trying to break the key, I guess. Increasing barrel diameter should provide more sturdiness - but can cause barrel to keycap contact.

dust_sleeve_up.jpg (207.32 KiB) Viewed 11 times

dust_sleeve_pressed.jpg (201.54 KiB) Viewed 11 times

I guess I'm close to actually trying to find somebody who can do injection molding of these. Any ideas who can do it?