/diy/ - Do It Yourself

>>1530455
>you can't just hammer through concrete and expect a perfect hole like you would a drill.

Yes, you can. The tool you need is a small sledge hammer and a star drill (pic). Hammer once, turn the star drill an 1/8 of a turn, hammer, turn back 1/8 of a turn, hammer, repeat. A "hammer drill" is an electric drill that has an impact function that hammers the drill bit for concrete down many times a second while spinning the bit. An impact driver uses an impact force for the spin of the driver bit to make installing screws easier, but does not hammer down like a hammer drill. So, only use hammer drills and star drills, but not impact drivers or drills with an impact driver function. You can also get a drill that has a hammer function, an impact driver function, or just normal drilling all in one and will have a switch to change the function setting.