Sorry, hit Enter too fast.
I’ll invite the mods to move this question and reply to a different thread if they see fit.
I tried my Engravinator with the EleksMaker module on several woods over the holidays, and didn’t run into any particular issues, aside from needing the adjust the power and speed appropriately. My uncle is a turner and we looked at how it might work on some of his pieces. The main thing I’d suggest is to go ahead and doing the etch before you do any final polish on the work; several of his pieces were so shined and reflective, they’d likely not do well with any laser.
Run a test with any wood you’re using, but especially anything with a pronounced grain pattern. I found vectors (like initials, I assume) were fine on “stripey” pieces, but rasters (like printing an image) were just too variable across pronounced grains to look good.
Re: failure rate, granted I’ve only run my Engravinator for about a month, but I haven’t run into any signs of stress or failure of any printed pieces. I do try to follow the recommended max speeds for movement to decrease any unnecessary stress on any pieces, though. My biggest concern right now is that since one of the motors is mounted externally that I’m accidentally going to bump it too hard when moving the Engravinator around, but honestly you need to be careful with any moving any piece of precision equipment around. Just because it looks fairly rugged doesn’t mean I should treat it that way.