So, looking at this
Processes that involve waste, molds, etc. are budgeted at only the cost of the raw materials that are on the car at the competition. This means fiberglass molds, forging dies, masking tape for paint, etc. can all be excluded from the budget if they are not on the car at competition.
I just need to account for the aluminum or whatever I cast with, right? How do I document scrap donated to me from an old job?