On Thursday, February 18, 2016 at 10:14:28 AM UTC-8, MOP CAP wrote:
I recently picked up some old almost all metal screwdrivers. The ones
with just the wood inserts in the handles. The wood is very weathered.
What type of treatment can I use to stabilize the wood in the handle?

If it's just weathered, give it a stiff brushing down (or maybe use a plastic
scrubpad) to remove surface dirt, then apply boiled linseed oil.
If it's weathered and warped or shrunk, paint on some mineral oil
(the USP type is fine) and wait a week or so for it to soak in, then
apply the BLO.

Give the BLO a day or so to cure, then rub down the wood parts vigorously
with newsprint or paper bags. It'll be slightly slippery, but a coat
of shellac will fix that.