Quoted from pinball_ric:He hasn't actually ordered it apparently but will likely order from Pinball Heaven in the UK. It's around $25 before shipping. Marco seems to also sell it but they want $50. The only downside is there are 2 color substitutions on the one Pinball Heaven makes which kinda sucks but I have no idea where to source the wire to make it myself. Even if I did that it would cost way more than that in materials to do it.
https://www.pinball.co.uk/game-specific-parts/star-trek-tng/cannon-looms-for-star-trek-tng-h-17067/
https://www.marcospecialties.com/pinball-parts/H-17067
You can get all sorts of wire colors at Bay Area Amusements. They have 18 and 22 Gauge. Search HA-30018 or HA-30022
http://bayareaamusements.com/Merchant2/merchant.mvc?Screen=SRCH
That being said, buying 8 different colors at $2.25 is not much cheaper but you should have enough wire to make a couple sets.