|Forum topic by funchuck||posted 06-13-2011 01:08 PM||2645 views||0 times favorited||9 replies|
06-13-2011 01:08 PM
I’m not sure if this is a known method of sharpening, but I just discovered (or maybe rediscovered?) an easier way to flatten the back of my chisels.
I bought a set of chisels about 6 years ago and never sharpened up my larger chisels because the backs of all the chisels were out of flat. Most of them had hollow spots running all the way to the tip. Some of them had big hollows at the tips too. It took forever to sharpen up my smaller chisels, so I never attempted to sharpen the bigger ones.
For 6 years, those larger chisels sat unused, but recently, I was bored, so I decided to give it another go. I took out my granite plate and some 100 grit sandpaper. I used my fingers to put pressure on the back of a 1-1/4” chisel, then started running the chisel back and forth on the sandpaper. After a while, my fingers started aching, and I wasn’t making much progress. I could see that about 1/8” at the very tip had a hollow. I kept at it, but there was hardly any progress and my fingers were aching badly.
I thought about this process and thought that life would be much easier if I can put pressure on the back of the chisel without using my fingers. So, instead, I used the heel of my hand.
Not only did this relieve the fatigue in my fingers, but it made the work extremely quick. I could bear down all my weight on the chisel and really grind into it. It was so quick and easy that I took out my 1-1/2” chisel and did that one in the same session!
I also used this on my oilstones, but with much less pressure. It made sharpening much easier. I haven’t tried this on my thinner chisels, but I think if I skewed the chisel at an angle, it might work. The only problem I have had is that because I am using oilstones, the chisel does become kind of slippery.
-- Charles from California