I’m numbering piano keys. Attached pic shows a rough practice piece (thus the uneven widths, and different font sizes/power settings I was testing!). Although the keys look similar, all 88 are different widths and angles, so it’s not possible to set up a jig to locate the parts.
My plan was to centre the laser on a pencil line, then mark the part. Foot switches will speed the process up no end, as the mark itself takes about two seconds, so having both hands free to move the keys into position would be ideal. Variable numbering is being used, fed from a CSV file.
Normally a much larger laser would be used, and the whole keyboard including cut lines would be marked out in one go. I’ll be marking they keys is batches of about 11, as that’s about all the space I have in the Ortur to leave a central working area.