Topic: air filters
Holmes makes a couple small puifiers with replaceable filters. WalMart and others carry them. personal air purifier starting at $15 filters $6. and a smaller portable 'smokeless ashtray with 3way power on some models starting at $10 filters $4. they are easy to place near printer extruder fumes area also have charcoal filters. check close on the ashtray as Walmart describes it with AC/DC adapter but sells battery only model sometimes.
Solidoodle 2 with Deluxe kit cover & glass bed with heater. and 2nd board SD2 used not 3rd and alum platform not installed yet still wood. also need cooling fan installed to board. use Repetier Host couple vers. Slic3r also have all free ware STL programs
Mbot has this built in, mainly to shut down the smelly odor from extrusion and make it all eco friendly.