Drill Bits

Menchhofer · Nov 2, 2003

Does anyone have a source for 1/8" or so drill bits about 1 ft long to 2 feet. I cannot find any locally and would like to have a few on hand when trying to determine depth or size decayed areas in certain situations when necessary. Anyone else use this technique?

treeslayer · Nov 2, 2003

electrical supply houses carry long ship auger bits (self feeding wood boring bits) in various lengths for house wiring, average is 18" long, extensions easily added.
1/8" is small but maybe. average is 1/4" for low voltage cabling up to 1" or bigger for romex.

Menchhofer · Nov 2, 2003

I have some ship augers for repair work, I would like the smaller bits for exploration. Small as possible.

M.D. Vaden · Nov 3, 2003

Maybe the from the same people that make the smallest tubing in the world!

I remember that in about 1975, Guinness book of world records listed a rediculously small size for tubing. I don't recall the diameter, but it listed artificial insemination of mosquitos as its use (malaria research?).

Your skinny bit query reminded me of that.

Just looked in my toolbox. I've got a 12" long bit that must be 3/16" diameter. Its not marked at all, but its a mite bit over an 1/8".

That's darn close, only 6" short of your goal, and maybe skinny enough - sorry, no brand name on it.

Kneejerk Bombas · Nov 3, 2003

Web search result:
http://doityourself.com/store/6771885.htm

You could try the resistograph people too. Their machine uses long thin bits.

Grigory · Nov 3, 2003

IML-RESI needles

There are boring- needles for the device IML-RESI, however they very thin (1/16) and should rotate in through any conductor (directing).
http://www.iml.de/shop/pd384275069.htm