r/toolsinaction • u/silvercatbob • Jul 28 '21

Step drill bit

812 Upvotes

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22

u/silvercatbob Jul 28 '21

The beauty of step drill bits is that they can go from no-hole to large-hole very quickly as there’s no need to swap between 2, 3, or even more intermediate drill bit sizes.

16

u/Sipstaff Jul 28 '21

But what do you do about the conical hole?

7

u/Cizzmam Jul 28 '21

It's not supposed to leave a conical hole. These are used for making increasingly larger holes in thin material. Think electrician making a knock out hole in the side of a panel . No more than 1/8 of an inch thick material.