Recycling High Speed Steel Burs


When I buy my high speed steel, 90 degree, under-cutting burs I always think of the words, "waste not, want not". This little phrase has stuck in my mind for many years. If I find that some of my burs are getting past their prime then I examine each of these well used cutting teeth and decide if I should re-sharpen them. Some of my burs are $10.00 to over $15.00 per unit so why throw it away if it's only slightly worn down?.

2 Minute Read

When I buy my high speed steel, 90 degree, under-cutting burs I always think of the words, "waste not, want not". This little phrase has stuck in my mind for many years. If I find that some of my burs are getting past their prime then I examine each of these well used cutting teeth and decide if I should re-sharpen them. Some of my burs are $10.00 to over $15.00 per unit so why throw it away if it's only slightly worn down?

The one problem in re-cutting burs is that the overall size is not the same as before re-sharpening. This however is no big deal. Why you say? The bur I'm resharpening now will become a size smaller, but when I resharpen the next larger bur, it will become the size that the bur I'm sharpening now was.

To resharpen the burs, I use my carborundum wheel to individually recut the very outside edge of the teeth. This may seem like a tedious chore, but after a short time you will develop a "feel' for cutting the teeth and extend the use of your burs for many more months of hard work.

%image_alt%

This method of re-cutting is not to be used for the 156C burs as their teeth are too close together. It can be used with the High Speed Steel 90 degree angle bur. This bur has its teeth a bit farther apart, and this "open tooth" spacing, is adequate for what we need for this procedure.

To recut the teeth, use a very thin carborundum wheel. Carefully thin out the edge of this wheel and proceed to touch only one tooth. Why? This way you can see if the new cutting angle is the same as what's on the older bur. Hold the bur with your left hand and rotate it slowly keeping your hand and wrist supported and the elbow rigid. Once this re-tooling section has been accomplished, proceed with the next group of teeth. Now with greater care, start at the "pavilion" of the bur and work "outwards and upwards" towards the actual cutting area of the bur.

%image_alt%

Then invert the bur and recut the teeth on the "crown facet" area of the bur. As before, cut the upper section of teeth one at a time, working towards the outside leading edge of the bur.

In a few minutes of very careful cutting, you now have a brand new bur, slightly smaller mind you, but it's good for many months of constant use. Till the next time!

By Gerry Lewy – © 2013
All rights reserved internationally. Copyright © Gerry Lewy. Users have permission to download the information and share it as long as no money is made. No commercial use of this information is allowed without permission in writing from Gerry Lewy

You assume all responsibility and risk for the use of the safety resources available on or through this web page. The International Gem Society LLC does not assume any liability for the materials, information and opinions provided on, or available through, this web page. No advice or information provided by this website shall create any warranty. Reliance on such advice, information or the content of this web page is solely at your own risk, including without limitation any safety guidelines, resources or precautions, or any other information related to safety that may be available on or through this web page. The International Gem Society LLC disclaims any liability for injury, death or damages resulting from the use thereof.


Gerry Lewy

With over 40 years experience as a stone setter, Gerry Lewy is known throughout the diamond setting community. Gerry started his 9-year apprenticeship with a jewelry manufacturer and tutored by a gentleman ‘setter’, in Haddon Gardens, London. Gerry has redeveloped himself into more than a master setter, his purpose is now to be a teacher of the art as well.

The All-In-One Jewelry Making Solution At Your Fingertips

When you join the Ganoksin community, you get the tools you need to take your work to the next level.

Become a Member

Trusted Jewelry Making Information & Techniques

Sign up to receive the latest articles, techniques, and inspirations with our free newsletter.