I have sorted through my drill bits and wondered about the differences between brad and twist drill bits. I mostly drill holes in wood, much less so in metal or plastics. Are both HSS? Are all bits typically Made in China?
Pros/Cons of brad-point and twist drill bits
Nov 08, 2007
2 Replies
Different purposes. Brad-point drills are great for minimizing tearout in face grain. They're also easier to locate precisely due to the center spur.
They can both be HSS, high carbon steel, carbide-tipped, or whatever other material you want. They can be made wherever.
Lee Valley has very nice Made in USA twist drills in HSS. Their HSS brad-points start out as these twist drills, then LV grinds a spur and lips on them.
Chris
differences
Brad point = wood.
Twist = Other than wood; however, bits for plastic are plastic specific.
The cheap crap is most likely from China.
If you want Fuller, both brad and twist, Jamestown Distributors has them.
Lew
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