A workman is only as good as his tools. At least that's how the saying goes. When it comes to such workmanship, nothing kills a workflow like a dull drill bit. They are cornerstones of any good garage ...

We may receive a commission on purchases made from links. You can tell a dull drill bit more or less immediately. If you're drilling wood, you'll likely see thin wisps of smoke as it starts to burn.

Call me thrifty or just call me a skinflint, I can't bear to throw a tool away if I think I can repair it. That may seem obvious with big-ticket machinery, but it may not be worth the hassle on ...