Multiple Mechanism Auto-Rewind Spool Holder

prusaprinters

<p>A compact and reliable filament rewinder based on a linear counterweight mechanism that can be produced in a single 11 hour print.</p> <p>Provides a complete filament management solution eliminating the need for the space wasting and difficult to load filament buffer.</p> <p>Offers many PTFE attachment options supporting a wide range of spool, MMU, and printer configurations.</p> <p>This rewinder supports filament spools with the following dimensions:</p> <ul> <li>diameter up to 235mm</li> <li>width up to 90mm</li> <li>hub diameter between 50mm and 75mm</li> </ul> <p>The stand included in this design supports three different rewind mechanisms:</p> <ul> <li>Gear and vertical track linear counterweight mechanism (included in this thing)</li> <li>Universal spring rewind hubs designed by Vincent Groenhuis</li> <li>Martin Hoffman's rewind arm mechanism</li> </ul> <p>My hope is that one stand which supports three rewind mechanisms will encourage more people to print and test a rewind solution as part of their MMU deployment.</p> <p>The only non-printed parts required are:</p> <ul> <li>three 608 bearings</li> <li>a counterweight (a 0.5" or 12mm bolt and nuts are commonly used)</li> </ul> <p>This design was inspired by the earlier work of Vincent Groenhuis and Martin Hoffmann.</p> <p>Please see the <a href="https://www.thingiverse.com/thing:3691892">thingiverse page</a> for details.</p>