Shorter Glowforge Tray

[evansd2]

@dklgood

The focus length of the Glowforge lens is 1/2"

You can mess with this if you’re into math and experimentation.

Deep focusing the lens

So I had this idea for a while and finally got to it: an extension spacer for the lens so that you could engrave/score (or cut) the inside of a tray up to about 1” deep. Normally you are limited to trays no more than 0.5” deep because of the limited focal sweet spot of the Glowforge, but if you physically move the lens down and lie to the Glowforge about the height of your material, it will happily do the job. Here’s a quick makeshift “tray” that’s about 0.75" deep, a really shallow cardboard …

@michaeln just thought you might be curious from a product perspective. Feel free to use this idea however you like.