This Thing is currently under moderation:
Files and images for this Thing are currently unavailable.

Double Whammy Prusa

by chowderhead, published

Double Whammy Prusa by chowderhead Feb 10, 2013

Thing Apps Enabled


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

Thing Statistics

Views Downloads Found in 3D Printer Parts


The Double Whammy prints parts twice as fast because there are two extruders working simultaneously!

The machine is intended for production, producing two copies of the same print at once. Built using my Push-me-pull-you extruder drive (http://www.thingiverse.com/thing:46800) and a pair of Acarius10's Minimalistic J Head X Carriage (http://www.thingiverse.com/thing:45883) fitted with a pair of 0.35mm J-head hotends (https://www.hotends.com/index.php?route=product/product&product_id=88). I think the hobbed bolt came from lulzbot (http://www.lulzbot.com/?q=products/hobbed-bolt-stainless-steel); the hob is 29mm from the cap (stl included).

There is still some tweaking to be done (does it ever stop with these things?) but it seems to be working well.


03.09.13 - have had a lot of trouble with the FEP tubing blowing out of the drive-end nuts. Trying out some PTFE tubing now. Will update after a few hours of printing. With the exception of the sheath failure and sore thumbs from loading filament into the push-me-pull-you, it has been working excellently. The extruder is quiet as can be...

02.14.13 - uploaded micrograph of a pulley I printed on the DWP last night - pretty sweet if I say so myself! What has proven to be very nice is the ability to slow print speed down to improve print quality while still making parts at a much higher rate than before. I had some trouble with stripping PLA and plugging up the hobs with the idlers having only 1mm at-rest spring stretch and replaced them with idlers having 4mm stretch - seems much better.

Follow the instructions for the various bits.

The Bowden cable sheath is 2mm x 4mm FEP tubing.

Space the x-carriages at about 100mm on the x-axis.

Slice the parts with the x-axis size set at 100mm so that the print is properly centered in each print area.

I tried media from two different suppliers at the same time and was unable to complete the print. Even different colors seem to behave differently. Suggest that to minimize catastrophes, use the exact same material in both sides of the extruder.

Drink something yummy while your printer produces at twice the rate it ever did before.

All Apps

Auto-magically prepare your 3D models for 3D printing. A cloud based 3D models Preparing and Healing solution for 3D Printing, MakePrintable provides features for model repairing, wall thickness...

App Info Launch App

Kiri:Moto is an integrated cloud-based slicer and tool-path generator for 3D Printing, CAM / CNC and Laser cutting. *** 3D printing mode provides model slicing and GCode output using built-in...

App Info Launch App
KiriMoto Thing App

With 3D Slash, you can edit 3d models like a stonecutter. A unique interface: as fun as a building game! The perfect tool for non-designers and children to create in 3D.

App Info Launch App

Quickly Scale, Mirror or Cut your 3D Models

App Info Launch App

I have to try this. Thats awesome.