I’m looking for a way to get high rigidity and low weight links for robots that I am thinking of converting from plywood to a different material. Aluminum seems like the bets bet. I understand that its most likely going to have to be waterjet cut, which means outsourcing. Does anyone have any good links for places for a hobbyist (small orders, money constraints) to get waterjet aluminum pieces?
On another note, is there any other material that would give the same kind of properties as aluminum, but easier to acquire/cut? Lasercutting delrin comes to mind for me, but its not exactly the nicest thing to lasercut on your own machine (formaldahyde fumes, indistinguishable flames = fire risk).