How To Sharpen A Parting Off Tool
Sharpen cut off blade for lathe.
How to sharpen a parting off tool. If youve used the bench grinder recently youll want to dress it removing the old bits of debris caught in the stone. If by bevel on one edge you mean that the tip of the cutting tool in ground to a 5 degree angle to the right then the purpose is to be able to part off the piece and then continue to advance the tool to get rid of the nib that otherwise would be left on the remaining stock. If using HSS parting blades grind andor hone the cutting edge to ensure its sharp.
The same amount of time turn the parting tool over and do the opposite side. Another important step is to make sure the cutting tip of your parting tool is right on the center line of the piece you are parting. This gets down to clean wood and it evens out the brass pins.
Parting is done with a special tool. Part-off Tool Inspection. The two leading corners are kept sharp because after the bevel is honed the bottom is also honed but the tool is lifted off the hone by half a degree give or take.
The un-skewed cutting edge of the parting tools actually makes them much easer to sharpen. Then I used the disk sander to round off the corners and the wood end of the parting tool. A sharpening jig sy.
Since everything was square I went over to the 12 monster disk sander and sanded both sides flush. Parting tools of almost any sort seldom give the best possible finish. Think of it as a facing tool.
Unfortunately I did not take a picture of it before I cut it. In this example we are making a normal right handed tool for the lathe. In general the method is to use either a grinder or belt sander and then finish with a hone.
