How To Grind A Parting Tool

Then I used the disk sander to round off the corners and the wood end of the parting tool.

How to grind a parting tool. Recommended clamping length is 4 x bar diameter d. About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy Safety How YouTube works Test new features 2021. Your goal is to stop the grind at the exact moment it reaches the tip.

You can apply a degree of back rake at the same time too if you desire. Straight blanks for grinding parting tools are available in 9 widths from 23116 mm 00910457 inch. When machining with long overhangs it is especially important to mount the bar correctly to ensure enough clamping contact.

Grinding the end face of the tool The grinding rest was tipped to give the required end relief angle and the fence adjusted to give the front cutting edge angle. Instead grind the profile first by feeding the nose of the tool into a sharpening machine. First setting proper tool height will minimize the nib.

This flattens and dulls the cutting edges but you can use these flat edges as a guide to maintain the desired profile. This video discusses the basic setup of a parting tool for the best results. Try placing a quarter in front of the wood block that should work.

What you dont want to do is grind rake into the top of the blade. Again the front cutting edge angle was not important although it is usually set to make the tip and less than 90 º. The un-skewed cutting edge of the parting tools actually makes them much easer to sharpen.

Grinding down too far will have the effect of reducing the blade width and so limits the depth the tool can be plunged. Im assuming youre talking about your average HSS parting blade including P-type If you grind the top of the blade the tip becomes lower than the original top. A demonstration on how to sharpen a lathe parting tool.