[artdutra04]

Well this make sheet metal designs a bit more difficult... back to the old flat head bolts with PEM nut option.


For those which cannot change their fasteners to flat head bolts, here's the McMaster part number that I think will save a lot of teams this year: 8782K12

1" wide x 1/4" thick polypropylene strips at $0.53/foot. Polypropylene is among the lightest and cheapest commonly available plastics, but even still, installing this strip around the outside of your robot perimeter will add just over a pound.

For comparison, using a 1/4" x 1" strip of Lexan will add over 1.3 pounds.