General ToolsDrill Grinding Attachment #825 - Drill Accessories - For use with ANSI, OSHA, and UL

Greek product, but not for some.I used this for the first time and fixed some of my dull bits and brought them back to factory or possibly even better. I sat there with a friend and lent it to him and told him how to do it, but he messed up all of his bits even more. I guess it depends on the person.

Es un producto de excelente calidad, probe afilando una broca y fue un éxito, aunque debo seguir entendiendo bien como funciona para obtener el máximo provecho.

un excelente producto.

does a great job with drills 1/8 thru 3/4. You get the same sharpness every time and it is quick. Look at some youtube videos for better instructions.

I got it mounted next to my grinding wheel and it works, sort of. It requires care, practice and skill to get the drill edges even. I had hoped it would be easier to learn to use it correctly and am still working on it.

An awesome tool for smaller bits

yes, the instructions are a bit cryptic, and I needed a few reads to understand fully, but it does sharpen drill bits very well. I have a fairly good grinder wheel (120 Grit Silicon Carbide) and with some practice, I now have drills that do well using my hand drill and drill press. And after some more practice with this attachment, using the sharpened drills in my bench metal lathe now makes holes that are not larger than the size of the drill.I recommend this drill bit sharpening attachment to anyone who uses drills often and is willing to invest a little time to master it.

this thing is junk, save your money. specs are loose, when you tighten the drill bit, the clamp raises the shank of the bit changing the angle. not good. very cheaply made, nothing is paraelle. worse instruction ever.