Couldn't find anything about this, so thought I'd ask here.
I have quite a few old screwdrivers that have been stored in metal toolboxes in a damp, but not wet, basement. Over the years I've noticed a tough, white coating appear on the handles of some of the oldest screwdrivers.
Is this some sort of mildew, or a chemical separation of the plastic of the handles, or...?
I've found it pretty difficult to clean this stuff off - is there a particular solvent that would be best to use?
Thanks for any info...