lab stirrer heated for extracts

thingiverse

Just like its counterpart, this version is tailored for extracting extracts. It rapidly evaporates solvents, such as alcohol, to make concentrates or essential oils and so on. I use it for concentrating Maca root, which requires precise temperature control. To print this design, you need to use ABS because of the heat bed's high operating temperatures. Printing at 100% infill is crucial, as anything less will cause the printer to warp and potentially tear itself apart. I placed felt pads on the bottom in each corner to prevent damage. The essential components include a 40mm CPU fan running at 12 volts, along with two 10x2mm magnets for magnetic levitation. The M3x60 screws and aquarium tubing serve as spacers between the moving parts. A heat bed is also required, which can be sourced from DirtyPCBs (http://dirtypcbs.com/store/designer/details/peter.plaaswerf%40gmail.com/168/100x100mm-3d-printer-heated-bed). Proto packs typically contain 12 of these units. The heat bed significantly speeds up the evaporation process. Two 555 PWM ICs (scematic provided in the images) allow for precise control over temperature and spinner speed. A fan is also needed to cool the #6 stopper. Some holes need drilling for mounting the top, securing the fan inside, and attaching the heat bed. For a 12-volt power supply, an Xbox 360 power brick can be used. However, you'll have to modify the 555 PWM schematic for this project, which shouldn't pose much of a challenge if you're familiar with building timer circuits yourself. This is essentially the same timer used in a PWM box mod. If you're not fond of the Ag+, simply flip the lid over.