Hi I've got some problem, we want to install some kind of hanging book shelf in our room. The thing is, our driller is not strong enough to drill the wall, the IKEA guy's said that I need some kind of pressure driller, since the wall in our building is really tough and solid. It's really frustrating since I tried to drill a lil bit with a normal driller and now it leaves some little hole in my bedroom wall. I don't wanna buy this pressure driller just to make 4 holes only. Is there any place that rent out such driller or even some professional service for drilling in HK?