I think the idea was to burn the code in the jig, not the work.
It would be very handy if we had the ability to encode our own settings in a QR code for quick setup of repeat jobs.
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Iād settle for a dropdown menu.
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Canāt remember everything that was discussed aboveā¦ The QR code stores material type and some identifying code but they donāt seem to encode any of the settings. Even now settings are changing for the materials to get them dialed in just right.
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Batch too? Thatās good news! Somehow I missed that in past posts.
Iām going to go ahead and say that I am wrong on the batch info. I was positive that several of the 1/8" Maple Plywood received with the unit were identical and others had different QR codes. But I just went and looked at all of the material I currently have and each one has a different QR code. If it was by batch you could assume I would have a few that were identical. The first few identifying letters are the same for a material type but the last 3 are different for every piece even for the same material. So material type seems to be included but maybe each piece has itās own letter identifier.
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BTW: Should have trusted @karaelena 's post. The gantry moved back dragging my material with it in the middle of a large engrave. The magnets didnāt jump off the piece but found that sweet spot where the friction between magnet and material was greater than that of the crumb grid.
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Baseless rumour humour: Itās so Glowforge knows if youāve used a piece of wood, so that you canāt reuse it again after itās cut out. Itās DRM for wood. 
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You would think an identifier for material and batch would make more sense than a different code for each and every piece of material.
FYI: I wonāt say that I have used the QR label from one piece to use over and over.
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Itās actually easier to do it per piece of wood. They can associate it with a batch on the backend. Itās extraneous info to have on the label itself.
The only time things like batch# are really useful is when itās a code meant to be read by humans directly
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Well, in reality, it probably is an individually serialized piece of material. If thatās true then it just indicates a desire to keep a very close eye on quality, not just from the Proofgrade manufacturers but through their warehouse supply chain. You can keep batch information, but if youāre trying to figure if the wood has been stored properly before distribution (say, a pile gets wet, ruining some of it), itāll get expensive to do a recall on an entire pallet.
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Once youāre doing serialization with printers that can make every piece different, itās probably just as easy to do it that way.
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Yes! @takitus was mentioning the difficulty of position the laser relative to the position of the jig. So I suggested that using a QR code to store the coordinates and starting point of the jig as reference for the print job. That way you could place the jig anywhere in the bed and have the pieces aligned properly to the job. The information would be specific to the jig.
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Very impressive, easy to understand. Thank you so much! Basic question, what kind of masking paper did you used?
Thank you
What thickness plywood did they use for these invitations, if you remember?
1/8
Speaking of which: a guy stopped by and discussed Glowforge capabilities. He thought it would be great for his machine shop to engrave the anodized aluminum part identification tags they attach to their parts. Deal killer: not having a serial/sequencer function that would add automatically the tag id number. SUre you can bypass with merge and templates, but that would be a bit more complicated. Interesting use case thought for the hopper.
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Iāll bet there is a turnkey solution out there, I just donāt know about it.
It would be really easy to run an svg through a script that did the right thing. A good python programmer could type that out in a few minutes. (The main design decision would be whether to store the current top number in the file or elsewhere.)
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That looks a lot like the tacky paper that you get for transferring cut vinyl. So you could also try searching for Vinyl cutter transfer tape. Obviosuly you want the paper version as there is a plastic film version too
Hello and thank you for your wonderful tutorial.
I would like to find masking material but I can not find a large roll like you. Can you tell me where you find this masking tape?
