Silver:
Totally Tubular has a great selection of parts for scratch building micros. T-2 (.246") motor blocks, couplers, extensions.
T-2+ (.281") Micro-Maxx minimum dia body tubing.
T-3 (.375" body tubes
T-4 (10.5mm) .448" body tubes
T-5 (BT-5) .544" body tubes
T-2+ to T-3 fiber centering rings
T-2+ to T-4 " " "
T-2+ to T-5 " " "
launch lugs: coffee stir sticks, cheep-o plastic Q-tip sticks, Bic Pen ink tubes, Evergreen or Plastisturct 1/16" styrene tube drilled out to .051"
Streamer material: Teflon plumbers tape, Military grade teflon tape.
Chutes: 1/4mil mylar with teflon tape pom-pom (larger models only)
Fins: CardStock, waferglass, .020 & .030" sytrene, .030 clear lexan, 1/64 3-ply plywood, 1/32" basswood.
Nose Cones and Transitions: ya gotta make yourself.
Micor motor hooks. .020" stainless wire.
Check out the files section of the micro-maxx yahoo group, it loaded with the how, what, where's and why's
Hope this helps