Every once in awhile I’ll come across a plane blade that is so heavily pitted and corroded, the best thing to do is to simply throw it away. This blade that came off a Stanley No 6 plane was no different. The problem was that I didn’t have a replacement blade to go with the plane I was restoring, so I was forced to see if I could get the blade to work again.
The first thing I did was take the blade over to my 8″ speed grinder and grind the face and back of the blade to remove the corrosion. I paid special attention not to heat the blade up too much so, I occasionally cooled it off in a bucket of water. Fortunately, the blade’s face had about a 1/4″ of metal at the bottom that wasn’t pitted, so I was hopeful I could still get a good edge out of it.
I took the blade over to my Tormek and ground a 25 degree bevel on it and honed the face flattler on the side of the Tormek grinding wheel the same way as I did with my 8″ speed grinder.
After the grinding was finished, I took the blade over to my water stones and sharpened it just as I do with any other blade. When I was done, there was a clean line of light at the tip of the cutting edge so I was hopeful it could achieve a nice cut.
Placing the blade back into the plane, I tuned it up, and sure enough, this crappy blade cut pretty well. I took out my dial calipers, and the shavings measured .002″ thick. The blade will eventually need to be replaced, but at least the plane can function properly now.
The plane performed so nicely, I used it to flatten my workbench.