On Jan 25, 1:15*pm, JIMMIE wrote:
I came across an old single LPDA TV antenna in the trask. It was
pretty much FUBAR except for a coupe of feet of boom matrial and a few
insulators. My XYL is into making models and castings and she can make
a mold of the insulators easy enough. I was wondering if anyone knew
of a good casting material that would be compatable with the
requirements to build a single boom LPDA antenna to form the
insulators. She is not usually concerned with strength or UV
resistance so she couldnt help much on this part.

Jimmie

I sent my wife some pictures of the insulators and she says they would
have to be made in a 2 part mold and she cant do that. RATS. Ialso
found that within a mile of my apartment is a wholesale dealer that
sells a huge variety of casting materials. The info they gave me is
that someting like this would probably have to be injection molded
from melted plastic or machined from billets.

After rethinking a little if each half of an element was connected to
each other with a fiberglass rod the torsion forces on the insulator
would be reduced to zero and it would not have to be that strong.

Jimmie

Jimmie