Dremel 9904 Tungsten Carbide Cutter

Exactly what I needed! Great tool, priced right, and got the job done!

Top brand. Highly recommended. No problems.

I had to slot some holes in 16 Ga steel, because my holes weren't perfectly aligned. This cut through the steel like butter - I've used other Dremel bits that weren't Tungsten Carbide, and they had a tough time with steel like this. I thought I might need a lubricant, but these just blasted through without slowing down. You definitely want to wear safety gear - dust mask, eye protection, thick gloves - when you use this. It will shoot out tiny bits of steel into you (I got some in my fingers because I didn't have gloves at first). Just a reminder - not a negative of the bit! It does show the contrast between the other bits I used and these - I didn't need the gloves with the bits that didn't work well, because they didn't remove large enough bits of steel to cause a problem. It'd be nice if it were a little less expensive, but it does work great.

I bought this cutter to make a square hole in a metal stud - the type of metal studs used to hold up drywall in high-rise apartments/offices. The cutter worked great, it moved through the metal stud no problem. I did however have 2 problems that I'm writing this review so that others can benefit from my experience: 1.) The cutter is relatively short. I was trying to cut metal that was behind some drywall. So the cutter had to be long enough to get through the drywall and through the metal. Because of an obstruction on the wall surface, I had to hold the tool about 1.25" away from the metal. This made it so that only the very tip of the cutter would contact the metal. While it worked I can comment that the tool is very short, so consider you application before buying. 2.) The cutter is very brittle. I actually cracked the shaft of this tool and could not complete my job. Because of my particular use, the cutter was bouncing around a bit in the slot I was cutting. This caused the bit to break. After it broke, i used the remaining portion to try to cut again. It broke a second time. Final recommendations: This cutter is good for controlled cuts in mild metals where you can brace/secure the work and the tool. This tool is not very good for free-hand cutting as I was doing. Make sure that you control the tool well to prevent bouncing and cracking of the bit. I think I will re-try with a thicker-shanked bit. Perhaps 3/8" if I can find one.

What a nice product ! I had been using a Chinesium bit on cold steel … then ordered this one and finished my work in 2 minutes. PERFECT I’m looking at 3 more now in different styles just cause this one worked so well !

Works great for sharpening dog toenail clippers

Nice

Very high quality cutting bit. I used it to cut a bearing race out of an axle housing. Quick and easy.

Lo utilizo con un moto tool milwaukee de 12 volts y funciona de maravilla. Desbasta el material con mucha facilidad y es muy resistente. Se atoro en algunas ocasiones por descuido mío y reboto fuerte pero no se dobló ni se rompió.

Good bit for metal cuts. High speed rotary tools tend to jump and these will break easily. Might want to get 2 if doing free hand work so you're not stopped part way through a task.

Very good product & also packed & couriered very well very good seller

さすがというか、とても良いです。 ドルメルの4000と4300で使っていますが、かなり固い金属を削っていてもあまり摩耗することなく長く使えます。 他の商品で安いものもありますが、仕事で使うので他の商品は使おうとは思わないです。 固い金属を削るならこれ一択です。

Me gustó la rapidez