Loading

Mooner's J-tripper Extruder

by mooner, published

Mooner's J-tripper Extruder by mooner May 1, 2013

Description

First off, thanks to Airtripper for a great compact extruder design!

This is my J-tripper -- a remix to the Airtripper design to allow for DIRECT mounting of a J-head (or similarlly slotted hot end) to the bottom of the Airtripper direct-drive extruder. I made this design to replace the finicky parts that I encountered on the Mk 7 / QUBD extruder designs.

I built mine using a Makerbot MK7 Drive Gear.

Visit airtripper.com/?p=367 for extruder body build details.

Once the extruder body is assembled and mounted to the stepper motor (as in Airtripper's instructions), simply slide the J-head hot-end into the bottom slot.

I consider this version "Beta" as I have only been using it for a few days. But it seems reliable so far, so I'm releasing it to the public. As the design is proven and updated to the Airtripper V3 core, I will also release the OpenSCAD file.

This is the reference extruder design for the F3 CubeMax (come see us at MakerFaire San Mateo 2013).

Recent Comments

view all

Ah. that makes sense... all is good with the thingiverse again.
Thanks.

Hi Boxx-

It's back there...

The stepper is sandwiched between the extruder body (this thing) and the acrylic plate you see in the photo. I think the photo just makes it really hard to see. The motor being screwed into carriage plate is how the entire extruder is mounted to the X-carriage. In retrospect, acrylic was probably not the ideal material for the X-carriage plate. It has a tendency to flex a bit, so the extruder is not held rock solid vertically as it moves. This can lead to sloppy prints.

I have since replaced the X-carriage plate with 4mm aluminum plate -- works much better.

it might be an optical illusion; how is the stepper motor mounted?
it looks like there's not enough room behind the extruder.

More from 3D Printer Extruders

view more

Liked By

view all

Give a Shout Out

If you print this Thing and display it in public proudly give attribution by printing and displaying this tag. Print Thing Tag

Instructions

Assemble using Airtripper's instructions here:
airtripper.com/?p=367

Then slide in your hot end!

Comments

You must be logged in to post a comment.

Boxx on Dec 3, 2013 said:

it might be an optical illusion; how is the stepper motor mounted?
it looks like there's not enough room behind the extruder.

Anonymous on Dec 3, 2013 said:

Hi Boxx-

It's back there...

The stepper is sandwiched between the extruder body (this thing) and the acrylic plate you see in the photo. I think the photo just makes it really hard to see. The motor being screwed into carriage plate is how the entire extruder is mounted to the X-carriage. In retrospect, acrylic was probably not the ideal material for the X-carriage plate. It has a tendency to flex a bit, so the extruder is not held rock solid vertically as it moves. This can lead to sloppy prints.

I have since replaced the X-carriage plate with 4mm aluminum plate -- works much better.

Anonymous on May 9, 2013 said:

This version seems to work fine... So posting the SCAD file here.

I think it could be made a little sturdier -- so will continue to evolve the SCAD. But here's the file as-is...

sgraber on May 1, 2013 said:

Any chance you can add your SCAD file? :)

Anonymous on May 1, 2013 said:

One the design is "proven" I will definitely post SCAD file. If you have a particular need for it now, I might be convinced to send it to you via email...

Top