Re: foam toroids

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Jim Lux" <jimlux-at-earthlink-dot-net> 

You can build up something from lots of smaller blocks, or, check the yellow
pages/paginas amarillas/classified directory/whatever it's called in your
neck of the woods, for big blocks of foam. (indeed, listed under "foam")

They use it for insulation in building and for making floatation stuff.

Since TC'ers tend to be scrounging types... check with a boatyard.  They may
have scraps.

You could also use foil/foam board (also conveniently available in 2" thick
panels) and stack it up, then finish with the electric carving knife.

Scrounge for that knife... it makes foam work a LOT easier...
You also should pick up a "surform", a sort of cheese grater looking thing
that is great for foam.

----- Original Message -----
From: "Tesla list" <tesla-at-pupman-dot-com>
To: <tesla-at-pupman-dot-com>
Sent: Sunday, December 14, 2003 9:51 AM
Subject: Re: foam toroids


 > Original poster: Mike <megavolts61-at-yahoo-dot-com>
 >
 > Rather than fool with trying fill innertubes with relatively expensive
 > foam
 > in a can..
 >
 > Buy big blocks of expanded polystyrene (trade name styrofoam), and use
 > either a hot wire (best results) or an electric carving knife and a
 > template
 > to make a toroidal foam block.  Sand, "bondo", cover with your
 > preferred
 > conductive surface.
 > Good idea, Jim.    If you wish to use styrofoam for a small toroid( about
 > 10" by 2" eg) you can find them at craft stores...They are meant for
making
 > wreaths.  I also found a 1/2 thick 'plate' of styrofoam for the inner
piece.
 > Mike
 >
 >
 >