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The Extractor
  • Posts:
  • Joined:
    Wed Oct 16, 2013 10:58 am

Hi all, new here, a customer is having us extend a masonry bit. It is a 3/4 shank for an SDS hammer drill. I drilled a piece of solid 1" 1018 and shrunk fit it and welded it with UTP rod with a little preheat and put it sand to cool.

What is the " proper way " to do this?

Thanks - A
Mike
  • Posts:
  • Joined:
    Mon Dec 06, 2010 1:09 pm
  • Location:
    Andover, Ohio

Welcome to the forum.
I use extensions for drill bits.
M J Mauer Andover, Ohio

Linoln A/C 225
Everlast PA 200
jwmacawful
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  • Joined:
    Fri Aug 13, 2010 1:23 pm
  • Location:
    the city that never sleeps

for extending drill bits i use a length of round stock approxamatly the same diameter as the drill shank then use a cut off wheel to slice the shank between the drill flutes and the adaptor contours that go into the hammer-drill then lay all in the "v" of a angle iron held in a vice then clamp with a c clamp vise grip and tack with 7018. remove and check for trueness then weld and wrap in old welding gloves when finished so it cools slowly.
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