Went to hardware store & bought a 2 foot length of 4" sheet-metal pipe, a cap for same, & a can of high temp flat-blkack paint. I plan to make a template & 'ribs' of corrugated paper (cardboard) for the parabolic reflector, then line it with mylar covered posterboard for my trough reflector.
___Cost so far, $10 US. I have the mylar (survival blanket) & plenty of corrugated stock from moving boxes. I almost bought a thermometer, but I think I can use our cooking one. While I wrok on the reflector & after the paint dries on the tube, I have in mind to stuff the tube with debris & see what goes with it in the Sun sans reflector.
___Having too much fun!
