High Clearance Fire Safe Acetone Vapor Smoothing Chamber

thingiverse

After nearly starting a galley fire and getting my 3d printer taken away by my superiors, I realized that brushless fans work in acetone vapor chambers but their wires don't necessarily handle the environment with grace. This device brings the electricity out of the vapor while utilizing a shaft to drive a fan blade to circulate the vapor inside of the chamber. This isn't necessarily a polished solution as it requires some mild fitting & epoxy but it is effective and fire-safe. It also has a larger capacity and height clearance than most vapor chambers. List of materials: Collet Style Motor Mount Motor to Shaft Adapter Walmart USB Fan with Metal Blade Large Pot with Glass Lid Wire Running Rods Epoxy Putty Epoxy Glue 3/8 Hose Barb to ½” NPT adapter (nylon) – drill ID to enable loose fit of shaft prior to assembly Electrical Tape 2 Nuts to secure fan blade (cant recall the thread at the moment) Assembly / Fitting Instructions: -Remove handle from pot lid exposing a small hole in glass -Install hose barb adapter into lid handle hole and use epoxy putty to secure. Make sure that it is square / perpendicular (using the motor housing to estimate perfect vertical position is a good idea) -Install motor housing. If fit isn’t tight, use epoxy putty - Use epoxy glue to attach motor / shaft adapter to the motor -Install motor assembly into collet style adapter and determine required length of shaft -Cut one wire running rod to required shaft length (need pin thread on bottom of shaft) -Install shaft from concave side of pot lid and install into motor shaft adapter. This can be glued in place if desired however, I just utilized electrical tape to create an interference fit. -Once motor and shaft are in place, wrap a few rounds of electrical tape around the top of the collet housing to compress collet around motor. There might be a bit of a loose fit around the motor. If so, utilize a small amount of epoxy to provide backup torque, immobilizing the motor. -Optional: use epoxy to secure the wire to the motor housing -Install fan on to pin side of the shaft and secure with one nut. Utilize the second nut to bind first nut and prevent backoff. Note: I set the fan blade to blow up instead of down. Utilization: Place paper towels on bottom of pot and soak in acetone. Utilize aluminum or other inert object to provide standoff from ABS Parts to be smoothed. Use machine outdoors or in well vented area to prevent vapors from annoying family members or other co-occupants who might commit a mutiny.