2026-03-29

Last modified: 2026-03-29 15:23:44

Keyboard Glockenspiel

I have been having trouble getting the key lever to print. It is a long, thin, and tall part, which is pessimal for warping. I'm now adding modelled "mouse ears" to see if it helps adhesion:

These greatly increase the surface area at the ends, and will get snapped off after printing. Annoying but maybe necessary.

That didn't work, but this did:

Having assembled it, we have:

• the holes in the case are OK, maybe could stand to be ever so slightly larger, need to be clearance fit
• the holes in the levers are too small, need to be push fit
• (but maybe for the holes I want to be drilling them rather than printing them)
• the damper hits the material at the bottom of the pivot, can't go down all the way
• the hammer hits the material at the bottom at the back, can't go up all the way
• the hammer is too light and does not always fall back down on its own
• both the hammer and the damper are too thick and can rub on the insides of the key lever
• the hammer wants provision for a metal ball
• the damper wants provision for a felt pad
• there is no provision for pivot pin or alignment pin
• needs a test stand to actuate the hammer properly, and hold a tone bar
• need to get 2mm brass rod or pins to make pivots out of, and 3mm or 4mm for pins