Birdstruder for MakerGear Plastruder

by tommyc, published

Birdstruder for MakerGear Plastruder by tommyc Nov 15, 2011
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This is an extruder block designed for the MakerGear Plastruder that allows for quick change of filament and easy clean up after a filament strip.

May 6, 2012
Updated the idler block design.


Print the 175 or the 300 build plate depend on your filament size. The fit of the components are pretty tight, depending on the calibration of your printer, you may need to do some sanding to put the idler and the top-hinge in.

Be careful not to hurt yourself when cleaning up the support structure in the birdnose.

If you are using a makergear plastruder, the only extra vitamins you will need are one 25mm M3 screw, one 30mm M3 screw and 2 M3 nuts

configuration.scad is also required. Get it form https://github.com/prusajr/PrusaMendel if you don't already have it.

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what sort of bearing is that?

The original through hole design make the idler a little too weak in prolong use. So 1.1 uses shorter M8 rod and has the sidewall as extra support.

Does anyone have a source for the Geared Stepper Motor?

Does anyone have a source for the Geared Stepper Motor?

Very nice.  Why the update of the idler to 1.1? I am assuming that I should drill in the hole for the M8 rod, correct?

Looks like a super design. Any recommendations on fill density? Also, in some of the photos it looks like people have used PLA. Will that hold up to the heat OK? Many thanks.

Don't use PLA, won't stand the heat unless you point a fan at it all the time. I use slic3r at 0.35 fill, 3 solid layer and 3 perimeter.

Had so many filament jams (1.75mm) with the standard Makergear extruder, and everytime undoing the 4 scews was a pain.

Not one jam since making this thing and changing filament is a few second job.

The closer clearances prevent the filament from disorting as it is pushed into the hotend.

Great work.

Thanks a bunch! I almost broke my whole extruder the first time using the basic Makergear one with the four bolts. the MG one isn't bad until you try to change filament. This one really saved me an extruder and time! I'm also printing out your Y carriage that you made, I'll post some pics when done if all works well. :-D

I see that your birdnose has buildin rafts, what thickness did you make the raft?

if i remember correctly, it is 0.55mm.

This looks great! I've been wanting a new extruder drive to replace my MiseryPusher, and this is almost exactly what I had in mind, but I've been putting off working on it because I had so many other projects not getting done. Looks like the only modification I will need to make to this is the MK5 hot end mounting, but if it's OpenSCAD, that will be easy. Looking forward to that SCAD file.

scad file uploaded. :)

I have a print that I think will work. I'll post a derivative once it's tested. Can you add a full list of vitamins for those of us who are self-sourcing the parts?

there you go...