What to say: to make a hole in the concrete wall can be difficult. Without the carbide punch or the diamond drill is not enough. And if you need to hang a bookshelf, lamps, a large painting, this work is justified. But for prints, photographs, maps to batter the wall with a punch?HACKSAW-“THE DENTIST”
If the saw teeth from long term use it had lost its sharpness and shape, it can be corrected with a file of triangular cross-section or a suitable needle file. But you first need a hacksaw to saw through slightly the angles between the teeth, sharpening will be easier.










