Alumimaker 2 by Achase79

Last crawled date: 2 years, 11 months ago

Video of it printing here: https://youtu.be/bAI9mNnLWFo . I still had a bit of wiring to clean up, and I'll be reprinting the blower fan mounts in black. There's also a little bit of stringing; I was still tuning the retraction.
This is an Ultimaker 2 derivative called the Alumimaker 2. It includes several design improvements, but most importantly, being made with 2020 extrusion, it is easy to modify and expand the build volume (easiest in Z, but also easy in X and Y.) I decided to design this because the Ultimaker 2 has received great reviews, I wanted to experiment with their motion system, and I wanted a system that I could easily upgrade to dual extrusion. This printer uses a number of stock Ultimaker 2 parts, leveraging a known good design.
Improvements
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Easily modifiable/upgradable chasis
More rigid frame
Direct drive motors eliminate compounded backlash in X & Y
Grub screws on radial bearings eliminate linear shaft displacement
Improved electronics (Smoothieboard derivative w/ DRV8825)
Increased Z build height
Less expensive
Specs
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External Dimensions: 340 x 350 x 470
Bowden extruder (Stock Ultimaker 2 or a different one)
Build Volume: 225 x 230 x 320 for this build, but easily expandable
This build is single-extrusion, but there’s a mount on the print head for another hot end; dual extrusion is trivial to set up.
Print speed: 30-300mm/s
Heated bed
Smoothieware-compatible electronics.
This is a work in progress. I'm putting up a build log at https://sites.google.com/site/alumimaker2/build
More photos at https://flic.kr/ps/2Zb9za
I posted a BOM and some more description here: http://www.reddit.com/r/3Dprinting/comments/2rzjwc/misumi_usa_contest/cob4802