[Joe Johnson]

I think that unless you buy the AL bar from Small Parts, it is not legal (since I can't think of any way to get it in under the Additional Hardware rules).

Now, as it turns out, Small Parts sells 6" dia 6061 AL bar stock.

How are we to know that the bar you made your wheels out of is not from Small Parts?

While I am loath to encourage any violations of the rules, I am also a realist that looks to the spirit of the rule.

In your case, I wouldn't loose any sleep over making your wheels out of the stock you have on hand.

Joe J.