Who suffered, making holes in concrete slab, knows that the best assistant in this case — a power drill. Well, if it does not exist? You will rescue two hammer and carbide drill bit d 4 and 7 mm. First, work a smaller drill bit and lightly hitting it with a hammer and turning a bit after each stroke. Breaking to a depth of 5-10 mm, model drill more and clean the resulting hole. The cycle is then repeated in 20 minutes manages to punch a hole to a depth of 40 mm.
Recommend to read
HORSES AND TRACTORS IN THE WEHRMACHT
This is one of the photos since the beginning of the great Patriotic war. Comments can be found in the diaries of the chief of the General staff of the Wehrmacht F. Halder, who noted:...
GENTLE PRUNER
For lovers of flowers is always a problem to cut the tender shoot, not damaging it. Neither the knife or household scissors, or the more secateur is not able to perform it in a way that...
