Tool Talk
What's-It Forum => What's-It Forum => Topic started by: cactus on May 15, 2013, 06:11:51 AM
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Chaps
I have this strange drill bit, tapered square shank, tapered round part in the middle.
Q1 - what is it for?
Q2 - what sort of brace chuck would suit it?
Cheers
Cactus
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Well, Cactus, it's for drilling bung holes. Those are the tapered holes in barrels and casks that are sealed by driving in a tapered plug. This one is odd in a couple of respects. First, it uses a center bit for the initial hole, which is then tapered by the back end of the bit. Second, it is really small. It looks to be more useful in drilling a hole for an old style wooden tap -- which would make it a tap auger.
It ought to work an any old brace or bit-stock.
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The tapered back end of the bit is for plugging the hole, so that all your liquid does not pour out while you get the tap ready to insert.
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Ok I get it now - drill a hole, bung it up with the taper, then quickly remove and jam in a tap to avoid much spillage?
Q. the maker MACORD is stamped on the shank - any ideas who that was?
Cactus
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>quickly remove and jam in a tap to avoid much spillage?
Well, I suppose* you could do it that way, but, I would probably roll the barrel on it's side first and drill on the top ;P
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>quickly remove and jam in a tap to avoid much spillage?
Well, I suppose* you could do it that way, but, I would probably roll the barrel on it's side first and drill on the top ;P
Where's the fun in doing it that way.
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Really it's a tapping augur, not a bung augur.
Generally barrels, casks & kegs were drilled at the cooperage, so the back end is more a go/no gauge.
Even if you have to drill into a wet one leakage won't be much problem unless you were dumb enough to vent the barrel before drilling.
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Thanks for all replies.
I have found it listed in Salaman's "Dictionary of woodworking tools" where it is listed as tap boring bit as suggested above.
Cheers
Cactus