whiskywill
Established Member
I know Am-Tech are not the Rolls Royce of tool suppliers but when using a new 10mm bit to install a wall bracket for a television, I noticed that the third hole looked smaller than the first two. I checked and the tip had disappeared and the helix part of the bit had started to wear into a tapered point. I was drilling through plaster, cement render and Thermalite block. The bit must have been made of cheese.