Move your Ultimaker2 extruder on the top of the feeder
It is intended to try reducing the underextrusion problems (see http://umforum.ultimaker.com/i...ndex.php?/topic/3261-ultimaker-2-extrusion-problem/page-2)
You have two parts to print:
- The block.stl, this part binds the extruder on the top of the feeder.
- The tube.stl, this part is a guide tube that goes inside the feeder, because the guide tube will now enter in the filament pusher box on the top, and not on the back
3d model print parameters
You don't need extra material, but you'll have to make extensions for the extruder stepper wires. I personnally added connectors to it to make it easi...er (I can take it on the top or on the back with just some screws to change)