I am currently building a gadget out of brass hobby tubing, like this: https://www.onlinemetals.com/mercha...40_w_tmP3ZkAuFQDxpnFe9cWYJVBs8YT8saAt1F8P8HAQ I need about 12 sizes that all nest inside each other. Brass tubing does this nicely, but it is not easy to cut to the precision I want. So i'm looking for alternates. Is there anywhere I could get something similar in another material? (I know there's copper and aluminum but probably not in so many sizes). What about styrene plastic?