Acetone Smoothie

thingiverse

The Acetone Smoothie spins ABS-printed objects inside an Acetone-vapor vessel, resulting in a uniformly glossy surface without any base scars whatsoever. The Acetone Smoothie can be made as simple or as sophisticated as desired. https://www.youtube.com/watch?v=qZ2M2RDUTAQ The Smoothie is designed to avoid pressure buildup by providing a vent in the 1st flange. Make sure enough clearance is left between the spinning rod and the lid of your vessel. This means that Acetone vapour will escape, which may be hazardous with DC brushed motors that produce sparks. Stepper motors do not produce sparks. Use in well-ventilated areas. The simple version If you want the simplest implementation and still get 90% of the benefit, this is for you. A $4 geared DC motor (http://bit.ly/2gGYym8) - Read note about sparks above No bearings are required. You can modify the Smoothie_Flange1 and Smoothie_Flange2 STLs so that the axis hole is 5mm or print plastic bushings to fit in the flanges. The advanced version If you want to precisely control the rotation speed, pausing, changing of direction, timing etc., then this is for you. You could also control the heating if you wanted to - not covered here - with a silicone heating pad, if desired. A $3 stepper motor such as 28YBJ-48 (http://bit.ly/2gY0zbK) $3 Arduino Nano (http://bit.ly/2g2g54g) $5 Ball Bearings (http://bit.ly/2h5SFMu) or Brass Bearings $4 (http://bit.ly/2gYxSxH) You will also need: 2x 15mm M3 Hex bolts and matching nuts A glass jar (size depends on your projects) A 5mm rod or tube (length depends on your projects) Notes I use hot glue to attach the Smoothie to the jar's lid. As a heat source, I use the printer's heated bed. I found that attaching the part to the rod with Hot Glue works best. To make life easier, I sometimes incorporate tabs with a 5mm hole inside the object. Then just insert the rod inside the object and secure it with hot glue on the exposed end. The Moai used in the rendering is from http://www.thingiverse.com/thing:149271