Well haven't used the nm145 much, but the little I have, I realized the coolant makes a mess. I had some angle iron lying around, so I just cut it to appropriate length, used 2 pieces per 'post' and tacked the ends, and bolted it to the existing tray. Home Depot has 24x18 Lexan and Optix sections, which are the perfect size, so I was able to use those without any cutting (other than trimming the back pieces a bit). $5 can of Krylon and it looks pretty good. The lexan slides up and out if I want to remove it for whatever reason, which was one of the goals. Just have to pop the 'door' off in front and build a higher frame for it and put some lexan in there as well.
Now, to actually make something!