what drill bit?

[andekoch]

what drill bits do you guys use for making holes through floor joists? eg flat, auger, forstner etc

Also has anyone used a '3d' or multi angle drill bit (MAD), they look like they can do a variety of things such as making holes in joists?

 

[jbec-john]

Auger every time. None of these fancy 3 or 4 bladed one's either. I had an expensive set, and they lasted about 2 months before the whole set was blunt. At least with a good old fasioned single one you can re-sharpen it several times without much hassle.

 

[Mac]

Always use auger bits.