2023-08-01 (Tu) GrinderCompassMKII New gear(box)

The adjustable height pin at the top was a good idea, but it would not align properly. I designed a base with three nuts embedded into gears so I could raise or lower each corner independently. I used an online gear generator to make a series of gears until I found sizes I thought would cut all right from the 2mm plywood. I made a large internal-teeth gear to drive the nuts synchronously, but it was prone to binding.
Spring-loaded pin holder with gears

I revised the layer containing the gears to have rounded corners, then cut it from 3mm plywood, but I could not reliably drive them simultaneously. The bottom was a simpler version without any gears, but the pins still did not align when I assembled it. The pins were severely trimmed escutcheon pins. The problem is the short shaft carrying the pin. There is too much room for it to wobble.
Pins do not align

GitHub files for GrinderCompass
The rest of the posts for this project have been arranged by date.
First time here?

Completed projects from year 1
Completed projects from year 2
Completed projects from year 3
Completed projects from year 4
Completed projects from year 5
Completed projects from year 6
Completed projects from year 7
Completed projects from year 8

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