On Thu, 16 Oct 2008 06:36:34 -0700 (PDT), Denny
wrote:

Plumbers power snake for sewers... Rent it at the rent it shop... It
will auger up through that duct tape and sand like it is tissue
paper...

denny/ k8do

Ummm.... this is through 3/4" schedule 40 PVC with at least two right
angles. The augers I've seen are for much larger sewer drain pipe and
will not fit inside 3/4" PVC. Anything that can drill through sand
can probably also do some real damage to the PVC. A much smaller
diameter "snake" is probably safer. With only 1ft of sand to push
through, a solid "tape" type electricians snake can be pushed through
by hand. The only down side is that the pipe will fill with sand when
the duct tape is breached, so cleanup may be a problem. If dry sand,
a small hose on the end of a vacuum cleaner should work.

Incidentally, the frequencies used by commerical cable finders are
815Hz, 8Khz, and 82KHz at 2-3 watts.
http://www.rycominstruments.com/3-8879-Cable-Utility-Locator.asp
However, that's good for 15 ft depth and many miles of cable. Higher
frequencies will probably work for 1ft of sand and only 100ft of wire.


--
Jeff Liebermann
150 Felker St #D http://www.LearnByDestroying.com
Santa Cruz CA 95060 http://802.11junk.com
Skype: JeffLiebermann AE6KS 831-336-2558