Anti-tangle spool bullet

This strange looking model feeds through the filament to prevent the filament spool from being tangled and trapped during printing using gravity. It applies constant pressure between the filament and the spool to make loosen the tension between them so that no knots are formed

This is a larger and heavier weight version of the Anti-tangle spool ball which can be found here.

https://www.printables.com/model/969981-anti-tangle-spool-ball

There is a 3mm middle hole to insert the filament to feed the filament through and it needs to sit on the spool for it to work properly. There is a fitting for a 2 x M8 bolt nuts to be fitted in so you will need to pause the print before the fitting closes.