Solidoodle E3D Extruder Assembly - Mashup Design Rev. A

by makerboz, published

Solidoodle E3D Extruder Assembly - Mashup Design Rev. A by makerboz Feb 18, 2014
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Edit: I have recently finished redesigning this thing, and have uploaded it to thingiverse here: http://www.thingiverse.com/thing:271506

This extruder is a mashup of several designs, mixed with a few of my own ideas. It allows you to use the stock carriages for the solidoodle while having an E3D hotend with an active cooling fan. It is made to allow for easy removal of the hotend, and also has a built in wire guide for cable management.

I have drafted up some modifications to allow for better heatsink fan placement, but for now this design should work quite well. I will post pictures of the entire assembly when I can, because I just printed the fan last night. Thanks for looking!


Due to the offset needed by the large size of the E3D heatsink fins, you will need to move your extruder stepper motor forward by around 4mm. This means that you will also have to unscrew the setscrew in the filament drive gear to move it further down the stepper motor shaft so that it aligns with the new offset hole. This may make the entire extruder assembly "front heavy", but it seems that it is working fine so far.

I'm hoping to eventually redesign it from scratch to eliminate some workarounds that had to be done to get the mashup to work correctly. Please feel free to comment on any ideas you might have on improving this.

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In case anyone wants to print this, Boz has posted rev B on thingiverse here: http://www.thingiverse.com/thing:271506http://www.thingiverse.com/thi...

Solidoodle E3D Extruder Assembly - Mashup Design Rev. B

Printed and installed this weekend, and it seems to be working pretty well. Holds the E3D very nicely, and so far the cooling fan seems to be effectively cooling it. I did have to make a couple modifications to make it work for me.

  1. The Z is even lower than the MK5, so you will need to further extend your Z limiter.
  2. The stock screws for the mounting carriage are too long to work with this. To fix I drilled the holes through and counter sunk them. This should also make it work with Lawsy's carriages as well.
  1. Yes, be very sure to adjust the Z height. I installed a 35mm bolt in my z-stop assembly to accommodate for the difference in height. (I'm also using a 1/4" thick piece of borosilicate glass so that adds a good bit too!)
  2. I'm afraid that I had to do this due to some design constraints, and I simply shortened my carriage bolts by adding nuts to them until they were short enough to work.

Glad it worked for you though! I'm working on a newer version, and I'm ultimately hoping to have the active cooling fan on the backside so that you can see the nozzle laying the plastic down easier.

Fantastic design, is there any chance you could upload the editable files?.. there may be a chance someone could change these files up to get it to fit to an i3 using a bowden setup. again, nice work.

I will post them as soon as I can. I made this on TinkerCAD, so I should be able to share them pretty easily. Thanks!

Sorry...I was confused myself for a moment. I was referring the the part that feeds directly over the E3D...that rear portion. Eager to print and install this weekend!! I'll give you a "Made" if it works out

Lower body of the extruder? Where? I could REALLY use this! To avoid confusion, I mean the part that sits under the gear/bearing over the E3D...thanks for your time

I'm still not quite sure what you mean. Do you mean the file called "bottom" in this thing? I'm sorry but I'm afraid I'm still a little confused.

For what it's worth I think this design is ingenious and fiendishly clever.

Thanks! I am just glad that it worked after putting so much time into designing it.