When I was doing thousands of wooden tokens I was forced to find a quicker means of production. Full strength household ammonia works almost instantly to desolve the residue. That discovery saved me many hours!
Alcohol works, but requires more elbow and time. Initially using alcohol, I had to soak them for several minutes, and still it took more work to remove the smoke stain. Neither one raised the grain
The burn mark thing seems to be in the eye of the beholder.
I was making all effort to mask everything to prevent it and one time I did not.
I offered to remake the item but they liked the char. Who knew?
If I am cutting a prototype before the finished project I have tended to not mask. Then you have something to show them and can mention the char could be there or be gone, up to them.
Thanks for the inspiration! I did a scan of cleaning agents I had on hand (no ammonia ) And found a degreaser that is lye based, Super Clean. Not only does it take the resin smoke of immediately, it also did wonders for my GF grid tray .
That dirty dirty tray had been off-smoking the backs of all my cuts from the residue in the grid cells after ~4 years of cutting, and it is soooo much better now! I did spray everything down with white vinegar to neutralize afterwards, does ammonia have a way to neutralize it?