How To Grind A Lathe Parting Tool

Edges faceedge need to be 90 so must be held square to wheel.

How to grind a lathe parting tool. Another thought on parting is to try to do your parting as close to the chuck jaws as possible. Turn the parting tool over and do the opposite side for the same amount of time. If using HSS parting blades grind andor hone the cutting edge to ensure its sharp.

The parting tool has an angle of around 50 degrees. You can see that Ive got a ways to go yet. Instead grind the profile first by feeding the nose of the tool into a sharpening machine.

Next I took the blade over to the disk sander and ground it down to bare metal. Then I used the disk sander to round off the corners and the wood end of the parting tool. 45 is a good general angle.

If youve used the bench grinder recently youll want to dress it removing the old bits of debris caught in the stone. 1 Its difficult to sharpen the bevels of a parting tool and arrive at the correct side profile with the ears leading the nose. Now just keep grinding and checking until the grind reaches the tip of the tool.

I then cut the end of the blade off to square it off and I cut and ground down the teeth. Using My New Parting Tool. Secure and dress the wheel Make sure your bench grinder is fastened securely to the floor with no wobble or give.

Turn the grinder on and lower the tip of the parting tool onto the moving grinding wheel for a few seconds. This flattens and dulls the cutting edges but you can use these flat edges as a guide to maintain the desired profile. I shaped the end of the blade like the Sorby Parting Tool double angle look.