JOINER Diamond Coated Grinding Polishing Review

This is a very durable blade that I have been using as a weekend hobbyist sharpening tungsten for over a year. I've also used it to sharpen HSS lathe tools. I used the fan speed control to slow down the speed of my angle grinder that uses this disc.

My wife dropped our expensive ceramic knife and the tip broke off. I used this diamond wheel to reshape the broken knife into a slightly smaller shape. This wheel on my grinder did the job in a fraction of the time a diamond stone would take! This wheel costs less than buying a new knife!

I cut glass bottles to make lamps in my house. I wanted something to put on my grinder to reduce the time it takes to hand grind. Was skeptical but got it and used it straight away and it actually worked incredibly well! My only advice when using it on glass is to get a very fine grit. Definitely exceeded my expectations.

I wanted to use these blades on a homemade carbide saw sharpener. First of all, the disc is not flat. I was able to play around with it a bit and it worked like true. The diamond is only on one side and very thin. That was just enough for two 14-inch sheets. You definitely get what you pay for! I will keep looking for better blade quality.

I put it on a 4 inch cordless angle grinder and used it to sharpen tungsten for TIG welding. need (and sometimes need :)) I just spin the tungsten in my fingers - a much cheaper solution than spending a few hundred bucks on a dedicated tungsten grinder Only ground 30-40 tungsten tips so far but no signs of wear yet.