<VUR3>c is the rule allowing steel and aluminum as raw materials for making parts. What limits are placed on the form of raw material. Based on our previous Q&A, it's clear that simple round or square bar, plate, and sheet (industrial standard stock) would be fall under this rule, but what about the following examples, considered by many to be raw materials, that are not so clear:
- threaded steel rod
- steel pipe or tubing
- rolled steel shapes (angle iron, C-channel, etc)
- threaded aluminum rod
- extruded aluminum shapes (angle, C-channel, small bars)
- extruded aluminum shapes, specifically 80/20-style T-slot extrusions
- Aluminum castings (produced by the team in their college's own foundry)
If #6 is allowed, would the commercial fasteners available for the T-slot (1/4-20 or M6 t-nuts) be legal, or would the team need to machine their own t-nuts from legal steel bars?