Review on Stainless Fryic Tungsten Carbide Cutter by David Dober

Two pictures of test patterns, not just bits. I like to make instructions out of plastic scraps. You can see one in the picture with the tape on the opposite side. It helps against back chipping. I had a hard time with very thin glass, its quite aggressive design. Either it was too aggressive or I couldn't push it down easily enough without a spring loaded guide that you can find for this purpose. All tests were performed on 1/16" and 1/8" glass scrap. The 1/16 glass broke 6 times before I just gave up. There was a hole in the 1/8 inch glass, the first attempt can be seen in photo two. I've used these bits a few times on other projects. I would only suggest using a thin glass guide. Use plenty of water and work very slowly, just let the weight of the drill do the work. All these details were far from the specifications measured with a digital caliper. The waves didn't look unbalanced either. I didn't notice any dullness either. Good price for a set.