Return to the Woodworking Forum | Post a Follow-Up

repairing overheated lathe tools

Posted by john02139 (My Page) on
Mon, Oct 8, 12 at 10:17

In my first go at working with a used lathe I sharpened the tools too aggressivily and allowed them to overheat (to red hot along portions of the edge). Are these tools ruined or can they be salvaged and if so, how would this be done.


Follow-Up Postings:

RE: repairing overheated lathe tools

Go ahead and use them as is. When they get dull---which will be fairly quick---take your time and sharpen.

Using a slow speed grinder or sharpening machine will help prevent overheating. There are many machines designed to sharpen lathe tools on the market.

Another tip is to have a small bowl/jar of water close. Grind and dip type procedure.

Once you get the darkened area removed, don't wait for the tool to dull before sharpening. Whet stones work well to sweeten an edge, for instance.

RE: repairing overheated lathe tools

Thw sttel is just softened, and wil not hold an edge as long after sharpening.

if you are just geting started use it as a chance to practie sharpening more often.

It is posible to re-harden and tem temperthe tools (approximately since you are lulikely to find therexact type of steel used).

It is simple in concept though.

Heat to red heat, quench in water-oil-brine (depends on type of steel).

One relatively constant thing is heating till the steel is no longer attracted to a magnet, then quench.

Re-heat 9not as hot this time) and allow to cool slowly to temper (soften) or the steel will be so brittle is will crack easily.

Unless the burning went deep, you will slowly sharpen back to better (harder steel).

 o Post a Follow-Up

Please Note: Only registered members are able to post messages to this forum.

    If you are a member, please log in.

    If you aren't yet a member, join now!

Return to the Woodworking Forum

Information about Posting

  • You must be logged in to post a message. Once you are logged in, a posting window will appear at the bottom of the messages. If you are not a member, please register for an account.
  • Please review our Rules of Play before posting.
  • Posting is a two-step process. Once you have composed your message, you will be taken to the preview page. You will then have a chance to review your post, make changes and upload photos.
  • After posting your message, you may need to refresh the forum page in order to see it.
  • Before posting copyrighted material, please read about Copyright and Fair Use.
  • We have a strict no-advertising policy!
  • If you would like to practice posting or uploading photos, please visit our Test forum.
  • If you need assistance, please Contact Us and we will be happy to help.

Learn more about in-text links on this page here