[SGS]

Our whole forklift/arm is made of steel, completed the arm weighed about 30 lbs, and ultimately caused our robot to weigh about 124. We had to disassemble and cut holes in everything, but our robot is VERY robust.

Last year, our whole frame was made of 1' square steel tubing , it was the only tunnel robot near the weight limit, but in the finals at Lone Star, it was an indestructible defensive robot and still quite fast.

Granted steel may not be the best material, but it is often a practical option and it is possible to create a decent if not relatively good robot with it.