According to McMaster the only difference is that white is FDA approved and meets ANSI 61 (no lead) specs. I assume they offer it in black as solely an aesthetics consideration.
Did some more reading up on it and it comes highly recommend for industrial environments, oils etc. with temp limits being it's only drawback.
Can't wait to come up with something else to make with it. Look forward to trying it out on the milling machine.
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