DIY Rechargeable Electric Fishing Line Despooler

A simple to make, snap together, low cost tool to save time swapping line on your fishing reels.  I printed at .2 layers and 15% infill with a brim, any filament will work fine.  Schematic included for lithium ion battery and charger module for portability, but could just connect a USB cable directly and power from there.

Poke a hole in the center of each eraser and insert onto the motor shaft being careful to get as close as possible to the middle.  Solder all connections, remembering to thread the 2 wires for the power switch through the hole.  Use hot glue to secure the charging module, then carefully use glue to position the motors with erasers as close as possible without rubbing.  I recommend fixing 1 first, then using a small amount of glue position the second motor, then testing and if working good secure with more glue.

I got my motors from an old toy rc car.

BOM:

2 x DC v130 size toy motor, https://www.aliexpress.us/item/3256805429378444.html?spm=a2g0o.productlist.main.19.fa30fWb4fWb4KI&algo_pvid=b16b237c-5934-4580-851b-d042767e3a5c&algo_exp_id=b16b237c-5934-4580-851b-d042767e3a5c-9&pdp_npi=4%40dis%21USD%212.90%211.77%21%21%2121.17%2112.89%21%402101ea7117363595396065085e07a7%2112000033758461890%21sea%21US%216230185137%21X&curPageLogUid=UR2mqg6JVpZQ&utparam-url=scene%3Asearch%7Cquery_from%3A#nav-specification

1 x tp4056 Lithium Ion Charger module, https://www.aliexpress.us/item/3256807793787225.html?spm=a2g0o.order_list.order_list_main.75.29f21802nuZq48&gatewayAdapt=glo2usa

1 x Power Switch, https://www.aliexpress.us/item/3256806146655150.html?spm=a2g0o.order_list.order_list_main.17.29f21802nuZq48&gatewayAdapt=glo2usa

2 x 10mm x 10mm Pencil Erasers, https://www.amazon.com/BIC-Velocity-Mechanical-Pencil-2-Count/dp/B01MZE2FY8/133-2342383-3204017?pd_rd_w=yWtYe&content-id=amzn1.sym.751acc83-5c05-42d0-a15e-303622651e1e&pf_rd_p=751acc83-5c05-42d0-a15e-303622651e1e&pf_rd_r=B62RFGNB754G12E37C4K&pd_rd_wg=M8mei&pd_rd_r=e71fe6f0-8248-44c1-8a6f-b7f21f92863a&pd_rd_i=B01MZE2FY8&th=1

1 x 14430 LI Ion Battery, https://www.aliexpress.us/item/3256808043467996.html?spm=a2g0o.productlist.main.17.560c15b9YIESzU&algo_pvid=fe09bb06-be5f-4efd-bf35-fca44707b468&aem_p4p_detail=202501081027268256743337123100000342688&algo_exp_id=fe09bb06-be5f-4efd-bf35-fca44707b468-8&pdp_npi=4%40dis%21USD%2111.82%217.68%21%21%2111.82%217.68%21%402101c80017363608463603604e7673%2112000044309316441%21sea%21US%216230185137%21X&curPageLogUid=oNACkY9I7z5D&utparam-url=scene%3Asearch%7Cquery_from%3A&search_p4p_id=202501081027268256743337123100000342688_3#nav-specification

Wire, Solder, and Hot Glue