The first useful page: 

• Jar placed on heating plate
• 3-4 mm of acetone in the bottom of the jar
• Heat plate to 120 C initially 
• Once the jar is visibly filled with vapor, drop plate temperature to 90 C for treatment 
• Smoothing takes several hours
• Once smoothed, place a lid on the jar and cool the plate, condensing and conserving acetone 
• Allow part to sit for 10 minutes while residual acetone evaporates 

The second useful page: 

• 70 - 90 C for plate
• Sealed metal container
• Fan inside to "ensure uniformity of treatment" 
• 10 minute bathing period 

The third page: 

• Rice cooker is used
• Custom pin board goes into bottom of heating vessel to allow for part placement while smoothing 
• Part is cooled in fridge beforehand to ensure acetone condenses onto the surface
• Smoothing takes several minutes 
• If part gets too hot, condensed acetone will boil off and create pit marks in surface 
• Test if filament is pure ABS by dissolving a small clipping completely in acetone beforehand 
• Part must be printed from pure, high-quality ABS to smooth well