|Project by Levex||posted 10-20-2015 10:31 PM||1475 views||11 times favorited||4 comments|
A large storm recently came through our area and blew down a lot of trees. Hmmm, free green wood for the taking. Good time to learn how to carve bowls. For that you need tools that I wasn’t prepared to buy so I decided to make a few starting with this hook knife.
I started with a used reciprocating saw blade and a small brazing torch.
I sped up the blade making process by grinding the saw teeth off and forming the cutting edge without first annealing the metal. I then used the torch to heat the blade up to bright red hot and bent it over a 2 inch hole saw to form the hook.
To harden the newly formed blade I reheated it to red hot and plunged the cutting edge into a container of automatic transmission fluid. I tempered it in our bbq for an hour at around 400 degrees C.
Once the blade had cooled I added a handle from some oak scraps, brass rod, and 2 part epoxy. When I started to clean up the blade and add a final sharpening I was immediately surprised at how hard the metal was. I ran a file over the blade and it left wear marks on the file teeth. I eventually managed to get a decent edge on it with an oil stone and a lot of work.
So far its been a great tool and holds an edge well even after cutting through hardwood.
One mistake I made during the build was trying to drill holes in the blade for the brass pins after I had heat treated it. I wrecked 3 drill bits drilling those two holes.
All in all it was a fun build. I learned a few things and got a new carving tool to add to my collection.