Update: FuseBox2R v1.1 files are available on Github. Reworked gantry is more rigid and has an improved belt path. A partially complete build guide has also been added.
Update 7/27/18: STLs and files will now be on Github only.
Update 3/20/18: Modified extruder to be compatible with flexible filaments. Tested with TPU @25mm/s.
An affordable and robust CoreXY printer loosely based on the original FuseBox. Materials cost ranges from $300-400 largely depending on what hotend and electronics you choose to use.
Improves on the original FuseBox2 by replacing the gantry rods with a single MGN12 rail and MGN12C carriage. Improvements include 30% lower moving weight, quieter movement, easier access to carriage components and a modular cooling duct. With a clone rail, upgrading costs ~$15-20 and building from scratch adds about $5-10 to the total cost.
FuseBox2R v1.1 @ 250mm/s: https://youtu.be/t1YAJrRtNjg
170mm/s printing: https://youtu.be/dm6vGjRgSQ8
Marlin 2 speed test: https://www.youtube.com/watch?v=aUQ9sjp_YzY
Specifications and Features
- Rigid 2020(top and sides)/2040(bottom) aluminum extrusion frame
- Non-crossing CoreXY belt path
- 210x200x210mm build area
- 390x340x412mm size
- MK2 or MK3 PCB heatbed with 3 point leveling
- Strong part cooling blower (4020s)
- E3D V6 or Lite6 + 40mm cooling fan and Bowden extruder
- 24v + 32 bit electronics recommended
Improvements over original FuseBox
- Slightly more compact
- Slightly larger build area
- 2020 frame for much greater rigidity
- Belt tensioning improvements - much easier to tension and screw-clamped to prevent slipping out
- Screw-clamped bearing and rod mounts - no more structural zip ties
- Proper belt idlers - eliminates belt rubbing
- (Optional) Extrusions joined via tapped ends + screws instead of corner brackets
- Lowered part count - y rods integrated into motor and idler mounts
- Vertical gantry for easier hotend installation/removal and better cooling
- Better endstop mounting and easier adjustability
- Robust electronics mounting with integrated display and IEC switch/fuseholder mounts - PSU flipped upside down for a cleaner look and so cooling fan doesn't interfere with heatbed