Electric coffee grinder - Timemore Chestnut

This turns the Timemore C2 (or C3) into an electric grinder ! 

It uses magnets for ease of cleaning and to allow the user to be able to change the grind size with taking everything apart. 

Instructions :

• Main body : print on the back, infill density is not super important, but I'd recommend at least 3 perimeters if using low infill. PLA works well for this part. 10x3 mm magnets are glued in the holes on top of the print. 
• Collar : 3 or 4 perimeters, PETG recommended for strength.
• Bean funnel : a food safe filament is recommended here as it will come in contact with your coffee. 10x3 mm holes for magnets on the back. Print with the magnet holes on the bed.
• Motor cover : print with the top of the part on the bed. 3 M3 screws are used to secure this piece to the body.
• Shaft connector : PETG is recommended, 4 or 5 perimeters and high infill. Use heat set inserts in all the holes, and M3x5 blind screws to tighten on the shaft. You might need to disassemble the grinder to fasten this piece to the grinder shaft before reassembling it.
• Catch cup : print in vase mode.
• Grounds chute : Food safe filament needed here, as well as 4 4x1.5 mm magnets.
• Chute threaded part : food safe filament, and 4 4x1.5 mm magnets. Be careful with the polarity.

Used parts : 

• Motor (143 rpm one) : https://fr.aliexpress.com/item/1005004308763127.html?gatewayAdapt=glo2fra
• Blind hex screws : https://fr.aliexpress.com/item/32865464785.html?gatewayAdapt=glo2fra
• Heat set insserts (M3 OD5mm, length 5mm): https://fr.aliexpress.com/item/1005003582355741.html?gatewayAdapt=glo2fra
• DC plug (5.5 x 2.5) : https://fr.aliexpress.com/item/1005008936573125.html?algo_exp_id=069698be-1a90-4b05-87dd-f76e99d8c921-36&pdp_ext_f=%7B%22order%22%3A%2251%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis!EUR!2.67!1.33!!!21.44!10.72!%4021038df617493228309494645e6baa!12000047271127466!sea!BE!1671862732!X&curPageLogUid=yttgBSOIOpcv&utparam-url=scene%3Asearch%7Cquery_from%3A
• Switch : https://fr.aliexpress.com/item/1005008046045111.html?algo_exp_id=ec275149-2af2-4e0d-9a81-12decc69322f-17&pdp_ext_f=%7B%22order%22%3A%221933%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis!EUR!7.40!4.29!!!59.34!34.40!%40211b876e17493231370078533e6b6d!12000043412823737!sea!BE!1671862732!X&curPageLogUid=Ib8qRzrcla75&utparam-url=scene%3Asearch%7Cquery_from%3A
• Some cable (I used audio cable as that is what I had laying around)
• M3 x 8 mm screws
• 2 M6x60mm screws (to fasten the collar onto the body)
• 2 M6 nuts