Reply To: When is a tool beyond restoration?
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John,
I certainly think you can bring the saw back to life.
Plus one on the Evaporust. I’d submerge the whole blade, back and all in the Evaporust overnight,rinse ( don’t forget to save the Evaporust)and scrub off the black residue with a green scrubbie pad and cleanser like BonAmi or such.
Dry.
The best rust penetrant is a mix of ATF (Automatic Transmission Fluid) and Acetone 50/50 by volume. If you can get it, add a couple drops of pure Wintergreen Oil to the mix.
Pour the mix into the hole formed in the blade back at the handle end. This carries some lube into the squeeze point of the back and blade.
Place the blade into your vise up to the back and tighten Tight. Allow about 3/4 to 1 inch of the back to extend beyond the vise jaws and use a hardwood block end grain against the back bottom edge. Give it a sharp blow upward to get the back to release. Once started you can be a bit more gentle it moving the back off the blade.
Once off you can assess whether or not the plate can be salvaged.
If you decide to replace the blade, save the old one as a template for the holes.
There are several tutorials online for doing all this ,Blackburn Tools is one.
There are a couple of sources for saw bolts and plates that I’ve used:
tgiag.com and blackburntools.com
Have fun.
Best,
Craig