Mollom Heavy Duty Carbide Hole Saw, Hole Cutter cuts Stainless Steel, mild Steel, Iron, Copper, Brass, Plastic (3 76mm)

Owned this 1” (25 mm) hole saw for all of 14 hours, the carbide teeth lasted about 2 minutes while drilling low carbon mild steel. I bought this bit hoping to drill 6 super smooth holes in 1/4” mild steel as I had purchased a smaller 3/4” bit from another source that worked great in the same material and much harder material. All the teeth on this bit broke off with only 60 percent of the first hole cut. Bit is Completely unusable now check the photo. For reference, I finished cutting the first hole with a regular bi-metal hole saw that was countless years old and literally missing 3 teeth. I then cut the remaining 5 holes with the bi metal blade so it wasn’t because the steel was too hard.

They work great.

Needed this to isolate broken screws attaching my deck stair treads so I could replace them. Using a 3/4 thick wood template to guide (could not use furnished centering drill as it would contact broken rusty screws) was able to remove old treads leaving the 5/8 core which I then split with a chisel and removed.

Well it drilled 2 holes fine, then broke. This was the 3 1/8 flavor, chucked up in a drill press, so I couldnt have bound it up too much the belts will slip. You get what you pay for.

Best hole saw that I’ve used to date.

Liked how nice it cut

I needed to cut a 3 inch hole into 10 gauge steel and this worked very well. I do wish the guide drill was attached a bit differently more firmly but it worked very well.

Nice product at a reasonable price

Use a god oil to lube hole cutter when using it.

Le facilita hacer el trabajo