3D Solutech Masterspool Connector
thingiverse
This is just a convenient alternative to printing the male side of the master's pool that it's remixed from. You can print out two of the plate-only (female) sides from ChrisAdamson19's file and three of these connectors (printed on their sides, so they feel much stronger to me) to lock the spool together securely. It is crucial to follow his advice closely and use filament or paperclips to lock the connectors into place properly. It seems to me that if any part of the spool were to break, it would likely be the posts between the sides, so I wanted to make them easily replaceable.
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