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Originally Posted by bloodhound31
I'm hearing you about going bog-eyed at triangles! I had to cut through my 6mm plywood for a 3v dome with a clapped out old makita jig saw! Next time I will get a high quality cutter of some sort, build a decent jig and electric sand all the edges after cutting, before assembling.
How did you join your triangles mate? I came up with an idea of making small pentagons or hexagons that screwed in the centre of the triangle joins. This solved a lot of problems and really pulled the structure VERY RIGID!
Very nice job indeed mate! Keep at it!
Barrys home made observatory
http://members.iinet.net.au/~armstead |
Slightly diferent approach,, cut all the triangles 1 or 2 mill small ,,,used construction adhesive and 4.5 mm pvc moulding and 4 mm hardwwood ply. Its just the shape I wanted, over that is going 20 0z chopped mat and polyester resin, inside 20 oz glass tape on the seems 2 inches wide again with resin. the bit Ive done so far is really stong, I dont think Im going to get any issues with sag , when I cut the slit in, the rollers will be located according weight distribution in the bottom ring of the dome as opposed to the bases ring, just to be different....
And thanks for the compliments...
Shawn
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