I’ve picked through the forums and seen lots of people talking about cleaning wood post-engrave, but I haven’t seen anyone directly addressing the problem of warping after cleaning.
What I’ve taken from the forums: You should use alcohol, and of course, if you get wood too wet, it’s going to warp. I’ve heard someone say something about pumice? And others about rags and such.
But when you’re 3d engraving, say, PG maple, it’s gets pretty charred and sticky (even if you engrave without the masking) and the prints looks MUCH better when you scrub out some of the gunk with a toothbrush. I did a topographical print recently that just didn’t look good, so in the end, I decided ‘what the hell, it’s a waste anyhow, let’s scrub it and see what it looks like underneath’…and it looks FANTASTIC! Once all the canyons and river beds were cleaned out, ah man, the detail was stunning. But it wouldn’t have been possible without getting the wood “too wet”.
It got a bit worse before it was dry, too, despite my efforts - you could have wrapped that baby around a pipe. In the end, with a lot of coercion and a lot of glue, I managed to get it flat on another material, but the details are all rippled and broken and cracked, and the backside was rippled and splitting - I mean, it looks cool, but I guess what I am saying is…
…does anybody have the secret method for cleaning wood post-laser without warping the hell out of the wood?