Old Lams

[Mad Max]

Someone was talking about Old lam's or veneers need to be sanded because of ?Oxidation?
For veneers can you wipe off with some kind of solvent?

[Kirkll]

There are some guys that use acetone on oily woods, and. say they have no issues with it….. personally, I never use a solvent on wood. Period. I would just carefully run a sanding block with 80-100 grit over it on a flat surface, in one direction.

Kirk

[Crooked Stic]

Well denatured alcohol is used to put color in for stain with no bad glueing results. Not sure that would relieve oxidation tho.
I think all you need to do is ruff the surface back up a bit and be fine

[kennym]

I've heard this too, and since wood changes color with time and uv, I like to do as Kirk said and  lightly sand them.

But, hold one end of fragile veneers and push the sanding block away from there, never pull it toward the end you are holding down.  Don't ask how I figured that one out...

[Longcruise]

As regards alcohol/acetone on lams:  I had an instance of tiny bubbles under clear glass.  This had never happened before.  The only thing I had done different was to glue up immediately after wiping the lams down with acetone.   Since then if I use either on any wood component it is left to gas off for a couple hours at least.  It's only applied if there is something on the lam that doesn't brush off.  There's been no further problems.

[Appalachian Hillbilly]

I think maybe they mean to get the original color back. Some wood turns darker as it oxidizes or is photoreactive like cherry.??

[Mad Max]

 

[garyschuler]

Most original color will darken under clear glass when exposed to sunlight. If ur is truly oxidation. Then you defiantly want to sand a bit to expose fresh wood a bit as already stated. Oxidation is kinda like case hardening to wood and glue will not penetrate like fresh wood does. My 2 cents anyway.