Earlier this year, MISUMI USA hosted a contest on Reddit for 3D Printer BOMs that used MISUMI components. We’d like to congratulate our first place winner, Andrew Chase-Ziolek, on his design of an Ultimaker 2 derivative called the Alumimaker 2.
In Andrew’s words: “It includes several design improvements, but most importantly it’s made with 2020 extrusion, so it’s 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 to leverage a known-good design.”
Check out his photos here: https://flic.kr/ps/2Zb9za
Link to In-Progress Build Log: https://sites.google.com/site/alumimaker2/build
STLs and more photos: http://www.thingiverse.com/thing:666549
BOM: Alumimaker2 BOM
- 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.
- 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
- Make sure to use a 0.9 degree stepper with plenty of torque if you go with the stock Ultimaker 2 extruder.
- It is possible to source stock Ultimaker 2 electronics. One advantage of them is that they’re set up to use the stock temperature-dependent resistors (RTD), while the Smoothieboard isn’t. I just replaced the RTD with a thermistor. The disadvantage of using the stock Ultimaker 2 electronics is that they’re still using an 8-bit Amtel processor which generally works but is probably a bit underpowered.
- I used a Smoothieboard mini, but if you want to do dual extrusion, it’s probably easier to use a Smoothieboard X5, which has four mosfets (2 Hot ends, Bed and Fan) rather than just 3. I’m hoping to make a fan extender with one of the spare pins for the Smoothieboard mini when I try dual extrusion, but it’s not a sure thing.