Your Cart

Rob Cosman's CBN Grinding Wheel

Rob Cosman's CBN Grinding Wheel
  • Rob Cosman's CBN Grinding Wheel
  • <iframe width="640" height="360" src="" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
  • Rob Cosman's CBN Grinding Wheel
  • Rob Cosman's CBN Grinding Wheel
  • Rob Cosman's CBN Grinding Wheel
  • Rob Cosman's CBN Grinding Wheel
  • Rob Cosman's CBN Grinding Wheel
  • Rob Cosman's CBN Grinding Wheel
  • Rob Cosman's CBN Grinding Wheel

Rob Cosman's CBN Grinding Wheel

6 reviews

Regular price $0.00 USD $179.95 USD Sale

11 left in stock.
Full Description
Customer Reviews

When I discovered CBN grinding wheels it was a game changer for me.  They are such an improvement over ceramic stone grinding wheels that its almost unbelievable! I was so impressed that I replaced all the grinding wheels in my shop with CBN.

After using them for a while I felt I could make them a bit better for woodworking applications.  So after working with a manufacturer to incorporate the changes I wanted, we now offer a CBN wheel specifically designed for the discriminating woodworker.   

Unlike most CBN wheels our wheel is coated on all sides.  This gives you the flexibility to grind on the left and right side of a blade without having to hold the blade upside-down as you do one wheels with CBN coating on only one side of the wheel 

Here is why our CBN grinding wheel is the best:

  • 80-Grit, Cubic Boron Nitride (CBN) coated wheel.  This cuts significantly faster as compared to typical 120 grit CBN or any other ceramic wheels.

  • 203mm (8 inch) diameter x 25mm (1 inch) wide, with 18.75mm (5/8 inch) arbor.

  • The wheel is coated with CBN from edge to edge on the wheel's 1 inch face, 3/4 inch of one side of the wheel and 5/16 inch on the opposite side of the wheel.
  • Wheel balance is not an issue because the wheel is machined from solid steel plate.

  • Solid steel wheel acts like a heat sink making tool overheating or burning much less likely.

  • CBN coating never loads up or requires dressing.

  • Economical: the CBN coating lasts for years under normal use


Cubic boron nitride, commonly known as CBN, is a man-made synthetic abrasive. CBN is made from cubic boron nitride grains bonded together by ceramic material.  CBN is the second hardest material after synthetic diamonds.

The process of making CBN abrasive is similar to that of synthetic diamonds: scientists treat hexagonal boron nitride at high temperature and pressure to create cubic boron nitride and treat graphite in the same way to create diamond.  

CBN is well suited for ferrous materials in grinding operations, as it will not carbonize when interacting with iron (Fe), as diamond abrasives may. Typically, CBN is used for grinding steel, cast iron, die steel, tool steel, super alloys, and in some cases ceramic materials.

CBN has several attractive characteristics that make it superior to diamond in grinding operations:

  • Withstands heat, especially during high-speed applications

  • Does not cause grit that can dull bits

  • Stays sharp and cool because it does not react with steel

  • Diamonds can also react with transition metals, limiting their usefulness for grinding certain materials. Cubic boron nitride is stable and does not tend to react unfavorably with standard transition metals.

CBN grinding wheels are made by electroplating CBN particles on steel, using electroplated nickel to hold the grit in place. A single layer of CBN grit applied to the surface of a metal disc can grind even the hardest surfaces and last for years.

Customer Reviews

Based on 6 reviews Write a review
Customer Reviews
5.0 Based on 6 Reviews
Write a Review Ask a Question
  • Reviews
  • Questions

Thank you for submitting a review!

Your input is very much appreciated. Share it with your friends so they can enjoy it too!

Filter Reviews:
United States United States
CBN Wheel

The wheel works great. I spent a couple days going through all my hand tools putting a new bevel on everything and finished them by hand. I love a sharp chisel and plane iron. As a side note, Rob and crew have fantastic customer service. I gave those guys the runaround with the purchase of the wheel. The whole problem was my fault. They were patient and worked with me at every turn. I am totally satisfied with the whole experience. Hopefully, they don't run for the hills when they see my name on a future order! Thanks Rob for your commitment to the woodworking community.

Canada Canada
CBN grinding wheel

Outstanding! Grinding updated to the twenty-first century.

Howard B.
Canada Canada
Rob's CBN Wheel makes grinding fun

Many times, using traditional grinding wheels, I have carefully ground a bevel edge and been disappointed when part of the edge turns blue when I was almost finished. That doesn't happen with this wheel. It really does cut fast and cool. Now I look forward to grinding. Get one, you won't regret it.

Ammed I.
United States United States

I have bought other grinding wheels in the past. They never last, they have to be flatned almost everytime you use them. This wheel is always ready to go, cuts fast which reduces the heat to the metal you grinding. I wish I knew about this sooner, buy one you will not be disappointed!!!!

Kaine M.
United States United States
Awesome product

Cuts fast and cool; tools don’t even get warm when grinding. Excellent product, will never use a ceramic grinding wheel again. Very high quality wheel and is worth the price. Now that I have one I think it’s an essential upgrade to any grinding setup.