Edward B Richards
zuu6k at juno.com
Sun Jan 8 23:19:31 EST 2006
73, Ed Richards K6UUZ
Simi Valley, Ca 93065
Home of the Air Force 1 pavilion
On Sun, 8 Jan 2006 21:21:34 -0500 (EST) John Lawson <jpl15 at panix.com>
> > ----- Original Message ----- From: "Edward B Richards"
> <zuu6k at juno.com>
> >> I am going to wind a pi section tank coil from 1/4" copper
> >> tomorrow. Mine will be 4" in diameter and 3" in diameter. Which
> tubing is
> >> best (no kink) thick or thin? Thanks.
> A trick to making smooth bends in soft metal tubing, is to fill
> it with
> fine sand first.
> Now - I understand this can be tedious with long lengths of
> small-diameter stock, but if you have no other mandrels or fixtures
> wind it on, sometimes this can help from developing a kink in the
> Then, you can blow the sand out, or just leave it in there -
> won't hurt
> the electrical specs of the coil...
> John KB6SCO
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