When I was drilling through a hardened steel I went to a specialty metals shop and they recommended cobalt bits. They were also much cheaper than lows but unfortunately have since gone out of business ...

Any of us who have used a power drill in the past has come face to face with the process of choosing the right drill bit for our project. Whether you are working with a piece of wood to build a table ...

I've been thinking about buying one of these but I don't know if they are just a gimmick. Also, if they genuinely work well how good do your bits need to be in the first place to be worth sharpening?