USE THE SHORTER PIECE FROM THIS https://www.printables.com/model/609935-turn-you-esun-spool-into-a-refill-spool-v3

this model is better because the old model doesn't fit good

with this model you can turn your spool into a refill spool. I didn't wanna print a whole spool because the cost and time. I modeled this of a esun spool but you can scale it to fit every spool.

just cut the spool in half and push each part in a half if needed ad glue. to cut the spool in half you can use this model https://www.printables.com/model/608756-saw-guide-for-tubes-and-esun-spool

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