Walking with my dog in a city park i found about 30 yards of fiberglass rod the kind they use to drive electric/comms wire into underground tunneling... so i made an early Saturday morning trip with a bolt cutter and i metabolized the whole thing into manageable rod lenghts of 2 and 1.70 metres.
The stuff is amazing! It's 1 cm diametre with a fibberglass core and an external layer of plastic that looks etreme wear resistant.
I've made a prototype compound bow with 5 rods , 3 rods of 1.60 metres, backed by 2 rods of 65 cms, and may be i add another rod of 65 cms or sightly shorter in the back of the last 2 rods, making a triangular pile of 6 rods like this...
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I've found i have to group the 3 rods with a nock in both ends to tie the string properly and i've done 1st experimental assembly with electrical duct tape.... it feels very nice and powerful. (i guess final assembly will be power tape and paracord) Nocks will be aluminium or plywood epoxied and tied with paracord or strong thread.
Any ideas about improoving it? any advice about compound bows?