Filament Mandrels (Rewind)

Someone had taken the spool from the red filament. As a result, the filament would never get back into a spare spool as the filament spilled out along the sides.

I designed and printed some mandrels. The mandrels have a recess on the back for a 1/4-20 bolt head. The bolt head would have been a way to convert torque from the bolt to the spool. Sadly for me, I did not have any threaded bolts that long, with the 1/4-20 bolt head. I ended up using a 5-1/2" allen headed bolt with washers and two nuts. The two nuts acted like locknuts. I duplicated the mandrels for the new spool and the bad spool.

We used a drill as a motor connected to the new spool. It fit nicely around the end of that 1/4-20 bolt.

We chucked up the badly coiled filament into another spool with its own mandrels. We used coat hangers to hold the mandrel of the bad spool.

We then used a spoon to act as a means of keeping the filament even in the spool but it failed due to the filament cutting the spo