![The original Retractable Purge Mechanism, for MultiColor 3D printing, Replaces purge blocks & wipe towers by BigBrain3D | Download free STL model | Printables.com The original Retractable Purge Mechanism, for MultiColor 3D printing, Replaces purge blocks & wipe towers by BigBrain3D | Download free STL model | Printables.com](https://media.printables.com/media/prints/14159/images/127868_a986fd09-8114-44cb-a5e2-0a8e186b653e/thumbs/cover/1280x960/jpg/retractable-purge-mechanim-mounted-on-prusa-i3-mk.webp)
The original Retractable Purge Mechanism, for MultiColor 3D printing, Replaces purge blocks & wipe towers by BigBrain3D | Download free STL model | Printables.com
![No sparse layers" on purge block/wipe tower leaves a midair artifact · Issue #3834 · prusa3d/PrusaSlicer · GitHub No sparse layers" on purge block/wipe tower leaves a midair artifact · Issue #3834 · prusa3d/PrusaSlicer · GitHub](https://user-images.githubusercontent.com/1733537/76640116-bbf7dc80-6525-11ea-881d-0e76860c4936.png)
No sparse layers" on purge block/wipe tower leaves a midair artifact · Issue #3834 · prusa3d/PrusaSlicer · GitHub
![Question on filament change blobs in purge block – Assembly and first prints troubleshooting – Prusa3D Forum Question on filament change blobs in purge block – Assembly and first prints troubleshooting – Prusa3D Forum](https://forum.prusa3d.com/wp-content/uploads/2020/08/IMG_20200818_120619.jpg)
Question on filament change blobs in purge block – Assembly and first prints troubleshooting – Prusa3D Forum
![Joel Telling - 3D Printing Nerd no Twitter: "The @josefprusa MMU purge block looks cool mid print. It's not solid plastic, and has it's own version of "infill" in parts. https://t.co/OyXu9ZLw1i" / Joel Telling - 3D Printing Nerd no Twitter: "The @josefprusa MMU purge block looks cool mid print. It's not solid plastic, and has it's own version of "infill" in parts. https://t.co/OyXu9ZLw1i" /](https://pbs.twimg.com/media/DOe6z2yVwAAMIsw.jpg:large)