Drill America - POUM16X1.5 m16 x 1.5 Tap and 14.50mm Drill...

Most Helpful Review

"I had four holes I needed to tap in 1/2" mild steel. I should have just bit the bullet and spent the money on a good tap instead of trying to cheap out on this one.The drill bit wasn't even hard enough to drill through mild steel and had to use a different bit that was 1/64" smaller to get the job done. After drilling out my four holes I tried going back to shave off that extra 1/64" with the bit that came in this kit, and all that happened was the steal marred and flattened the cutting surface of the drill bit.I should have known better than to continue but I foolishly went ahead and used the tap itself. I was able to carefully tap the first hole by backing out after every quarter turn of cutting and clearing the flutes of the metal flakes. I should have stopped there since the tap was flexing a lot (even when stopping every quarter turn of cutting). I got about half way through my second hole (using the same method) when the tap miraculously snapped in half leaving half of the tool still in the hole. I should have known better but I am furious at how terrible the tap performed.If you need to tap holes in plastic, or aluminum, or something softer like sharp cheddar, this product is for you. If you want to use it for actual work look elsewhere. I've sinced purchased some real taps from McMaster-Carr and a tap extractor. I'll never buy another product from this company again. I've learned my lesson. Buy once cry once."