[DeTomaso] [NPC] Selecting air drills

[JDeRyke at aol.com]

Uh-uh. I've done exactly what you're describing, and a hammer drill is 
required. They come in electric -Makita makes a nice 3/8"-capacity 'convertible' 
with a selector switch that allows one to do either conventional drilling or 
hammer-drilling. You will burn up a carbide concrete bit in minutes 
conventionally-drilling cement, while the hammer-drill goes faster in concrete and bits last 
longer. If you get a convertible drill & want to verify this, get two 
identical bits 'cause you'll need them. Oh, and do NOT touch the shank of the bit 
when changing them in the drill chuck; they get incredibly hot in a only 
minute......do not ask how I know this Good luck- J DeRyke


**************
Start the year 
off right.  Easy ways to stay in shape.
     
http://body.aol.com/fitness/winter-exercise?NCID=aolcmp00300000002489