WAS THE DRILL-WAS THE PUNCH

Categories Good recommendations

IT WAS THE DRILL -WAS THE PUMMELERVery often, a broken drill should just throw it away because of the inability to even re-ground it. However, it can be converted into a punch. It is enough to the breaking point to make the angle marked in the figure. For such an operation better suited for the drill of large diameter. This punch will make it easier to obtain holes in concrete. Slightly after each hammer blow, the punch should be slightly rotated around the axis.

L. ANDARALO, M and n s K, Belarus

Recommend to read

  • FLYING AROUND THE ROOMFLYING AROUND THE ROOM
    Room models of small size. Simple in design and in manufacture. Material for their construction can serve as dry stubble and any weed, its structure is similar to a stalk of wheat. As...
  • AMPHIBIOUS-SURVIVORAMPHIBIOUS-SURVIVOR
    Tourist boat-amphibian "AMFA" was built by Vitaly G. Lebedev 35 years ago. Over many years of operation it is, of course, has undergone several upgrades, but inherent in it original...