said by Pacrat:It's been my experience that tapcons are not the way to go with cured, dense concrete... but work very well in coarser, concrete blocks or brick.
Same here.. Well, I haven't tried'em in blocks or bricks, but I did have a few break off in dense concrete. I wouldn't trust'em to come out nicely once you remove the wall. Chances are, you'll need to play with the angle-grinder.
In any case, buy/rent/borrow a hammer drill. It'll save you lots of cussing and swearing. Actually it'll be stupid-easy with one.
