This is my 3d printer. It is a cr-10 v2 that I have modified to have an E3D hot end, a Bond-tech extruder, and a new control board. I did these upgrades with the hopes to be able to print with new materials such as nylon for Battlebots. There are other things that I need to do to be able to print such a hydrophilic plastic but this is were I started. A mistake that I made in this project was that I actually fried one of the stepper motor controllers when I was rewiring the printer. This is the reason I replaced the control board which ended up being a very valuable learning experience where I got to learn about the code that allows 3d printers to operate. After flashing new firmware onto the board I was able to get the printer up and running again. The new stepper motor drives also made the printer so much quieter which was a huge plus.
I designed the hotend using some references from thingiverse. I used them to figure out the mounting patterns for the hot and extruder to figure out how I could interface them but I designed the mounts myself from scratch. I did not design the fan duct but it does use the same mounting pattern as a Prusa machine so I can use their fan duct design or others I found on thingiverse. the design does not allow for easy access to the components unfortunately due to the restriction I have of using the original mounting pattern and hardware but in the future I might attempt to design a hot swap hot end. I also had to rewire the printer which allowed me to do some soldering which I enjoy.
This is a better view of the extruder and the energy chain that I printed to manage the wires. This solution for wire management reduced the bending radius of the wires which meant they didn't have to take on as much stress. It also kept them very much out of the way of the print.
The bondtech extruder is designed to accept the e3d v6 hot end directly but because of the mounting holes and the geometry of the printer, it was not possible to use this feature. Instead I recreated the shape of the e3d v6 hot end on the mount itself and left a small gap between the hot end and the extruder. This would allow for more consistent flow of material into the hot end and would also allow me to print flexible filaments that most boden tube setups don't allow for. This printer originally had a boden tube setup and doing this upgrade made it direct drive. The design is working fantastic for me and although I haven't been able to print with any exotic filaments yet, I will definitely be doing that soon.
