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The Hypercube Evolution (HEVO) is the open source successor to the hypercube. Both use a CoreXY belt system and are based around metric T slot extrusions.
The recommended control board is a RAMPS, which have cheap and loud stepper units. I instead decided to use a Duet Wifi 2 running RepRapFirmware. This was my first introduction to RRF in 2017.
The one mechanical disagreement I had with the HEVO was the decision to use a Bowden filament drive instead of direct drive. I found some Direct drive printhead designs online, but they all were very cantilevered, causing twisting.
A direct drive printhead I found online, all weight on one side.
I was able to design a printhead that balanced the stepper motor on the opposite side as the rest of the components.
I also added a custom electronics enclosure, cable chains, and filament sensor, among other improvements.
My design for a balanced direct drive printhead.
Part Cooling.
The design could use 8mm steel or 10mm CF rods.
You can see the motor shaft pass through the block.
Wedges hold the eccentric bushings in place.
Adjustable interference to eliminate unwanted movement.
Belt Tensioning
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