High carbon steel plates (>0.6%) can be provided, but are MUCH HIGHER COST. Options I can source include: M2 (0.78-0.90% carbon), O1 (0.85-1.05% carbon), A2 (0.95-1.05% carbon), and D2 (1.40-1.65% carbon). Please email me if you are leaning that way and we can discuss it more.

This jig is used for breaking in new diamond and CBN grinding wheels.

The jig is held on your machine's universal support bar (red part), and can be used in the vertical or horizontal position to break in a new grinding wheel (green part).

The handle (blue part) is 3D-printed, and attached to a steel plate. Ordering the jig handle does not include the steel plate.

The steel plate (yellow part) is ¹/₈” thick and 2” wide. Being 2” (50.8 mm) wide, it is adequate for both the 250 mm and 200 mm grinding wheels.

There are two steel plate options:

1. 1018 steel is a low carbon steel (0.13 - 0.20%) which is softer metal, but will certainly rust if not completely dried after use.
2. 304 stainless steel is also a low carbon steel (0.08%) but is much harder, but is also less prone to rust.

The USB and grinding wheel shown in the picture to the right are NOT included.

Prices shown do not include taxes nor shipping.

To order one, please send an eMail to ColvinTools@Gmail.com.

Want to 3D Print your Own?

If you want to 3D print one of these, the plans are available at the Sharpening Handbook in the jigs section. My only requirement when you do this is that you only make them for your personal use and that you not offer them for sale.