Dremel 628HP 7 Piece Titanium-Coated Rotary Drill Bit Set - Ideal for Wood and Soft Metals Drilling

Brocas eficientes para taladro Darmel. Buena duración

So happy with this product. I've been using it on many projects. My intention is for seaglass but I haven't spent a lot of time in it yet. It came packaged well and arrived exactly as shown.

great item, works well, good price

Excellent quality, very smooth cut, like a hot knife through butter! Equally with the bit being tapered from the shank it is so easy to load in the chuck, no more standard micro drill bits being used here!

I was initially concerned about using the Dreml for drilling through a piece of steel used as a weight on a model train. I wasn't sure the unit had enough torque to accomplish it, and that's why I sourced the OEM product, as it concerns me which tools I put in the Dreml, because of its very high rotational speed. I'm so glad I opted fore these: I drilled a 1/16" hole through a ⅛" thick plated steel weight in seconds. These drills behaved like I was putting a hole in something like wood or plastic. I used a little spring-loaded centering punch to mark the drill location and the drill never walked from that spot, meaning the drill point was very sharp and bit right into the steel without wandering. Dreml instructions say drilling in metal should be done at fairly high speed, and some coolant or lubricant should be used. I only had 3 in 1 oil available, but that worked perfectly. In the picture, you can see the screw and nut that are mounted in the hole; this is a #0-80 x 3/16" screw which is very, very small. The 1/16" hole is located 1/16" from the edge, meaning there is only a 1/32" "wall" from the edge of the weight to the hole. For me that is a precision hole location, and I was surprised I could hold that location that accurately, a testimony to the sharpness of the drills. I haven't tried after-market attachments in the Dreml because I am concerned about using attachments that are not truly designed or manufactured to tolerate speeds up to 30,000 RPM. An attachment failing at that speed could cause serious injury. So I stick to the OEM product and find them very reasonably priced for the quality. Of course, I always wear safety glasses when using the Dreml for that very reason. These drills, which are not all that expensive, significantly expand the capabilities of my Dreml tool and I heartily recommend them to anyone with a Dreml device.