A quick remix of the blower box, using the same insert, to utilize a blower fan I had on hand, a Nidec GAMMA 28. Any industry standard 75x30 blower should work though.
3D Solutech PLA
My printer has an oversized print cooling fan and a very well tuned bridging mode in my Cura profile, so I was able to print the base of this design with no supports, only a few spaghetti strings from the first bridge layer inner walls, easily cleaned up. If you are picky about your interior surface finish or don't trust your printer's bridging capability you may want to use some supports.