CR-10 V2 Petsfang Direct Drive mod

This remix is designed for the Creality CR-10 V2.

7/30/2020:
Mount V3 - I lowered the hotend 2 mm to to allow for the bed springs to be a bit more compressed. This should keep your bed level adjustments in tact better and keep the level adjusting knobs from falling off as easy due to poor spring compression and machine vibration from previous version.

Adapter plate V3 - I had to move the posts that embed into the hotend mount by 2 mm to stay in line with the recesses on the hotend mount.

6/28/2020:
Mount V 2.1 has a notch on the right-hand side to accommodate a cooling duct's full range of motion. Also improved the angles on the motor mount to true 45 degrees for easier printing.

Because the original cable for the extruder motor is so short, you will need to replace it with a longer one. it needs to be long enough to reach the far end of the X axis, so at least 500 mm long. Make sure the wiring is correct before hooking the new cable up, some require the middle two wires to be switched.

I turned the motor 90 degrees to utilize the top of the metal carriage, in the hopes that it will help support the weight of the motor. This design choice is also inspired by sashalex007's Speed Drive mod, which centers the motor over the gantry to balance the weight. Since the metal carriage is bent instead of machined, I left a tiny gap between the motor and the carriage to allow for variance in the bend angle from printer to printer. I may upload a few different shim sizes if I can get some feedback on how much of a gap there is between the motor and the top of the carriage, but for now if you want/need to shim the gap, you can either print a tiny square/rectangular shim in whatever thickness you need, or cut a few pieces of paper to size and put them under the motor before you tighten it to the mount.

Firmware/slicer updates:
Because the motor is now crossing over the X-axis gantry, this mod WILL shrink your Z-axis by approximately 42 mm (the thickness of the motor) to avoid crashing into the angular support brace mounting brackets. Since most screw assortments come with even number screw lengths, I increased the adapter plate thickness by 1 mm for version 2, this keeps the hotend mounting screws from bottoming out on the metal carriage behind the adapter plate. This moves the center point of the nozzle -1 mm on the Y axis (X is still at stock nozzle position). Because of these two factors you'll need to update your firmware and/or slicer settings accordingly to keep things from crashing.

Both files are uploaded in their printed orientation.

Support settings:
For the hotend mount, I used Cura's tree supports, touching only the build plate.
Support interface on, grid pattern, 25% density, 2 mm thick.
Z gap between support interface and model is 0.2 mm

For the adapter plate I used standard supports with the same support options

Other parts:
For convenience, I included the 40 mm fan cap, part cooling duct and BLTouch mount from the original Petsfang Titan direct drive mod. Original 'thing' files are here
https://www.thingiverse.com/thing:2907538

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