Precise hole making is complicated especially when the constituent materials have dissimilar properties. Machining a precise ...

Aluminium needs a sharp bit because it's so soft, a blunt drill will make a messy hole with a lot of fash on the back side. Doesn't need to be anything better than standard HSS. <P>I'd work up from ...

Almost any general-purpose twist bit will do a decent job of drilling holes in metal. In fact, most drill bits labeled ...

Four times the holes, four times the trouble. With the fate of repetitive motion injury looming due to the need to drill 1,200 holes, [bitluni] took matters into his own hands and built this nifty DIY ...

Gear-obsessed editors choose every product we review. We may earn commission if you buy from a link. Why Trust Us? The Takeaway: Diablo’s Impact Strong Step Drill Bits are a fast, convenient way to ...

A hole is nothing. Or more precisely, it’s the absence of something—wood, metal, concrete, or any number of different materials. Since holes are nothing, why do we care about them and how to make them ...

We may earn revenue from the products available on this page and participate in affiliate programs. Learn More › When you need to precisely drill through metal, cobalt drill bits are the only answer.

Q.I'm currently making a toolbox that will be permanently mounted in the bed of my truck, just behind the cab. I have built a structural framework from angle iron, and I have drilled and tapped holes ...