I wanted to engrave a plaque. The plaque was/is about 10.5x17.25 and .749 inches thick so within the glowforge’s engraving area but I’d have to use it without the honeycomb tray.
I sized the artwork in illustrator to the exact dimensions. I used the tips provided by other member’s here to get the correct focal height. I calculated this to be
(Thickness of the honeycomb - (thickness of my support material+thickness of the plaque).
This gives me focal length of .349inches. I put this into the settings and the glowforge zoomed appropriately.
When I imported my art, the guidelines in the artwork I placed to align the piece, lined up perfectly with the top of the piece suggesting my focal length was correct.
Yet, when I finally hit the button to burn this, the alignment was significantly off. It was 4 hour burn at 225lpi so it makes it frustrating that despite all the work before the burn, I still get imprecise results. I don’t mind it being a few millimeters off but this was significantly off the mark.
I’m including a picture that shows how far this was off in the final piece. Did I do anything wrong? Can the glowforge do precise alignment or is that just a limitation of this supposedly “pro” machine.