INSTEAD OF A DRILL HAMMER

 

INSTEAD OF A DRILL HAMMERWho 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

  • ASSISTANT WELDINGASSISTANT WELDING
    Thank you so much, friend magazine, for the development of welding transformers. Inspired by the publications took a chance and made themselves compact, but quite powerful "svarochnik"...
  • BRUSH WITH EPHESUSBRUSH WITH EPHESUS
    As a guard on a sword and protects the hand during a fight, and this simple device will protect it when working with a brush. Plastic bottle is cut open and his mate put on a pen — get a...