What size of drill should we use to drill 10 holes?
Use Phi 10 bit. Use drill chuck quality is good (without obvious shaking) electric drill hole, no margin problem.
The use of impact drill or hammer is generally used with 8MM drill, impact drill or hammer is by shock opening principle, always maintain a bit gap state, the gap is about 2MM, and the 8MM bit size, to meet the size of diameter 10MM! If a drill is used to open holes in wood or other plates, a 10MM drill can be used without the drill bit error...
