Review on 🔩 Carbide Aluminum Stainless Plate by BINOTA by Charles Lewellen

I used this bit to drill 12 holes in a 3" diameter, 1/4" wall steel pipe. I was able to drill all the holes but lost the carbide tips and ended up with all the carbide tips broken off. (Interestingly, the last tip broke right at the bottom of the 12th hole, but that was all it took me to drill.) The drill was still useful even if you had the last carbide tip left. I think the problem is that I drilled the holes with a 1/2" heavy duty drill bit and when the drill bit gets stuck a bit the bit flies off center. This causes the carbide tip to catch on thick steel and can break the tip due to the torque generated by the drill. If I could use a drill press or maybe a less powerful drill I might not have this problem. Note. I used lots of drill oil to keep the drill bit cool. The carbide tips were very sharp and retained their sharpness throughout the drilling process. To make the drill better, you need to enlarge the areas where the carbide tips will be brazed. If there was a larger "pad" for soldering, the tips would hold up better.