Feature Request: Numerical positioning

[joe]

My thoughts on what Glowforge is doing.

Why is the lid camera being used to home the machine?

All the high precision optical systems I’ve used at work use optical “homing”. They measure a fiducial (in this case, the Glowforge logo is the fiducial) and sets that as its datum point. If you think of the Glowforge as a traditional CNC tool, limit switches are ideal. They set your x zero and y zero very easily and at the corner of your bed. If you think of it as an optically driven system, then homing the head with the camera makes sense. You home the head to the camera and then use the cam…

This was my favorite “fix” that was proposed.

Tutorial - Batch Production With a Jig

Awesome! The 3 point fiducial ruler would be incredibly useful for many things. An idea for a 0,0 corner outside of the L shaped ruler wothout having to add anything: Just remove enough plastic to have a small gap/slot (maybe 1 inch) in the side rails of the tray which would allow you to lay down a ruler perpendicularly across the tray to act as the restraining guide on the y axis. Then all you would need is a standard 1" wide ruler I know it’s a bit late in the game for that, as you’ve proba…