I talked to one of the engineers at rust bullet distributor in california and he said it works on anything it lands on for the most part. he said the acid test was plywood covered in 3 coats tossed into a bottle of sulfuric acid for a few weeks and it was hadn't eaten through.
the only reason I mentioned it was wondering if chips would be less likely to stick to it making better flow back to your tank. I bought a can, and all the equipment and fixtures, screens and bar drain with built in strainer, but made the mistake of buying a kool mist portable unit as a temporary solution to run a few hundred parts that couldn't wait... now I just can't justify the down time of building a "real" enclosure like yours only to have more PITA of coolant management vs spray and done. I've also run deep slots (5x dia) and deep pockets and the air completely clears them. :: shrugs:: might do it when I have time... lol... whenever that is???
and since I forgot to say it before: that thing looks AWESOME!!
great solution for the casters are
these I have 6 on my table (way overkill) but they are great. level the mill in about 10 minutes (less with just 4) and have it ready to move in 4 minutes.