Positioning a jig on the floor of a Glowforge Plus

I’ve been trying to prepare a jig to engrave 1 1/2 inch wood blocks on the floor of the GF so I can invert them and engrave the opposite side. I’ve seen several ideas, many of which had magnets to help keep the jig in position while turning over the blocks, etc. I just learned from GF staff that my unit doesn’t have any area of the base (except for 5 small nuts) that responds to a magnet. How are others addressing the issue of keeping a jig in place while adjusting the work.

Thanks for any help you can give.

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Tape works, but having a jig that you can precisely place will work anytime so having one corner match the bottom right corner and run up that side to fix the rotation will work any time. Then you could use the tape to hold it in place.

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This was designed to make the tray stay in place, but something like this that you can cut a groove in it and in your jig so once they’re in place in the machine your jig hooks into them would make it a repeatable solution…

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This question is outside our team’s scope. I’ve moved it to the Beyond the Manual so the discussion can continue there.

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Huh that must be newish? My interior is fully magnetic, I wonder if they between aluminum and steel at some point?

Anyway I don’t have any great ideas for you, just thought that was interesting.

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You’re over-thinking this. Just cut it oversize so it seats against the front door and one side rail. Even if it is moved while rotating the blocks, just slide it back into the corner.

Better yet cut a corner compound jig, an L-shaped piece that sits against the rail and front at known position, then slide any other jig into that. You can reuse that L piece over and over, just design all other jigs to sit in that corner.

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Overthinking is one of my strong suits! I did come up with solution of sorts that I think will let me place oversized items in the GLOWFORGE and let me rotate or reposition them. I’ll see if I can post a pdf of the idea, but here is how I’d describe the solution: Make two inverted T shaped pieces about 1/4" thick and with the riser about 1" tall. Total height would be 1 1/4" from base. Place them on the floor of the GLOWFORGE and tape in position. These will support a piece of cardboard or other material for a jig. Under the carboard, between the two risers, I will put a “protective” piece of material. I will set the alphabet blocks on top of that after the cardboard is cut to create the jig.
If I have something smaller than the 1 1/2" blocks, but still too big for the crumb tray, then I’ll just add layers of material under the "protective piece to raise the top up above the level of the cardboard jig.
I have struggled with an idea to hold the cardboard in place on the risers. One idea is to use o-o’s and evansd2’s idea to push the cardboard corner into the left front corner of the GF. One I came up with was to use push tacks (flat head). Not sure if they’re magnetic or not.
I’ll try to put my design idea (I’m a linguist not an engineer) on this note.

tablejigforglowforge.pdf (25.8 KB)

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