I have an old wooden plow (plough) plane and the fence adjusting screws are frozen.
i can't turn any of the fence knobs or the other fence adjusting screws.
the weather could have swelled it.
any ideas to get the knobs turning?
i don't want to use any metal tools, this things an antique so I want to be gentle with it.
before the knobs froze I used the plane a few times with no problems, always only hand tightening.