Original poster: Vardan <vardan01@xxxxxxxxxxxxxxxxxxxxxxx>
Hi,
Well here it is!!!:
http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/BoxConstruction-03.JPG
The 8" spheres are about $100. All the brass was about $30. Prolly
blew another $20 in drills, epoxy, and other odds... A few angles
are little "out" so I might have to bend and pound a little bit
:o) But it is looking great!!! The epoxy is not really dry yet so
I am letting it sit overnight still. One slight change would have
been to drill a little air hole in the center of the slider tubes
for air pressure relief. Right now the spheres are sealed. Oddly,
the reflections in the spheres really are just like the POVray
program predicted :o)) Drilling the center ball was sort of a pain
to get the holes and tapped threads aligned right...
Got a lot done on the base box and all too:
http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/BoxConstruction-02.JPG
I am using hard steel SS machine bolts on the box handles rather
than the "cheap screws" that came with the handles. All top metal
will be fully grounded and hopefully protect the pretty "wood stuff"
from burning up ;-)) The box is a little over sized since it will
have "no external cooling" vents!! The "sealed" box will be able to
handle the SISG heat load while "all enclosed" ;-))
Sort of an interesting detail... I got some brass coupler nuts and
drilled 13/32" holes in the corner blocks.
http://drsstc.com/~piranha/PIRANHA/PIRANHA-2/BoxConstruction-04.JPG
"Forced" the couplers into the holes with a 2 ton press (hammer
works too ;-)) to make nice bolt holes for the top and bottom plates.
Through the bottom, they will mount the power electronics deck and
big brass ball feet along with all the SISG PIRANHA "guts". Through
the top, they will mount the dragons and the acrylic plate along
with the hidden primary and all. 'Opposite' bolts from inside will
provide high current grounding. I did make a "big grounding stud"
in the box after all ;-)
Cheers,
Terry