I have a client who gives me good repeat business. However, its a PITA to accomplish. Most of his materials are wood. about 30mm in diameter. slightly concave in the bottom towards the middle. I have to engrave a border design around it. The border of course has to be about .5mm inside the outer edge.
The problem is.... these are all hand made and some are not accurately done. If my border engraving is off by a bit and not centered, then he rejects it.
The only way I can think of to make sure each material is centered properly is to have a piece of cardboard in the bottom, laser a guide on to it and "fit" the material centered on to the guide (taking into consideration any imperfections the material may have). So far so good. But this process is time consuming and a headache. Anyone have any ideas on how best to make a jig for this?
I am thinkging of making an MDF with cutouts but the slight imperfections of the material might give me lots of rejects. And I dont have some junk material just like his to test out.