Compact Ball Mill
Description
This is a ball mill frame I designed. All objects snap together, but I recommend using super glue, or a soldering iron or heated coat hangar to melt the exterior layer of the seems for added structure. I use this on KNO3+Sugar for 3d printed model rocket engines. ALWAYS mill these components separately as the impact from the balls in the mill can cause the mixture to ignite in the enclosed jar. When you enclose flammable things they tend to explode. this is why I have seperate jars for seperate components of the mixture. Use at your own risk. Other parts used to complete the ball mill: https://www.amazon.com/gp/product/B094T387WD/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 https://www.amazon.com/gp/product/B08DHDFDTL/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1 https://www.amazon.com/dp/B08FFN3DS2?psc=1&ref=ppx_yo2ov_dt_b_product_details https://www.amazon.com/dp/B07BWBQXLF?psc=1&ref=ppx_yo2ov_dt_b_product_details https://www.amazon.com/dp/B01GEA8PQA?psc=1&ref=ppx_yo2ov_dt_b_product_details https://www.amazon.com/dp/B09NCD9Q9N?psc=1&ref=ppx_yo2ov_dt_b_product_details https://www.amazon.com/dp/B0BHQMF5GQ?psc=1&ref=ppx_yo2ov_dt_b_product_details https://www.amazon.com/dp/B08M6D2Q48?psc=1&ref=ppx_yo2ov_dt_b_product_details https://www.amazon.com/dp/B081PXKKS4?psc=1&ref=ppx_yo2ov_dt_b_product_details https://www.amazon.com/dp/B07C6FL8TW?psc=1&ref=ppx_yo2ov_dt_b_product_details https://www.amazon.com/Bringsmart-Mounting-Bracket-Fastener-Single-side/dp/B073NZ81M9/ref=pd_day0fbt_img_sccl_2/143-7350870-4882524?pd_rd_w=c5Ykk&content-id=amzn1.sym.c2062204-a945-491b-941c-359f18d6fec5&pf_rd_p=c2062204-a945-491b-941c-359f18d6fec5&pf_rd_r=H2W187R673FY348N1SNA&pd_rd_wg=SYCTE&pd_rd_r=36235fdf-79a9-43ba-bc0e-eccbf219e9ee&pd_rd_i=B073NZ81M9&psc=1 8 x M4 screws + nuts Rubber bands (to go around the plastic jars for extra grip against the rubber bushings) Grease (to add to the gearbox of the motor as it doesn't come with enough lubrication) 2 wire PC fan (To keep the motor cool) Fully assemble the base plates together, glue or melt the seems with hot metal for added support. Assemble the position of the rubber bushings and bearings on the threaded rods and adjust until the vertical bearing holder plates are 203mm from eachother from outside edge to outside edge when the rod bearings are pressed into the recess. Make sure everything is equally spaced on both rods. Then use 6 M4 screws to attach the rod mounts to the base. Connect all of the electrical components and press them into the control board, install the on-off-on switch into the control panel before connecting its wires. You can install the cooling fan wires into the motor output, or onto one side of the switch. Then press the PWM control board onto its mounting pins. Attach the larger pulley to the motor and the smaller pulley to the threaded rod closest to the motor. screw the motor into its mount, then screw its mount onto the motor base slits finger tight with 2 x M4 screws + nuts. Install the belt, then pull motor tight making sure the pulleys align with each other. tighten the motor screws. Press the control panel into place and glue or melt the seem against the rod/bearing mount for added rigidity (not required). Put rubber bands around the plastic jar so they make contact with the rubber bushings. then fill the jar less than 1/4 of the way with bearing balls, place the jar on the rods, and turn it on. one direction may cause the jar to fall off of the mill, make sure the drive rod is turning inward toward the opposite rod and this will not happen.
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