Hemera mount for I3 Mega

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UPDATE (04.01.2020):
The I3 Mega doesn't seem to be ready for Marlin 2.0 yet. I have now flashed back to Marlin 1.19.
I also printed a new fan duct that you can see better on the nozzle (https://www.thingiverse.com/thing:4042492).

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My Hemera printhead consists of two parts: the mounting plate itself and another part for the cable and the original extruder PCB of the I3 Mega. This cable clip has 2 holes for cable ties (see pictures).
I planed 4 screw positions to attach the I3 Mega extruder board, but it's not necessary. It fits perfectly and stays in place although without the screws.


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Print Area:
I adjusted my print bed by laying on a smeared hard paper plate (Pertinax) and fixin