i3 Mega Solid Frame

This is my take on a substructure for the i3_Mega_S

Basicly there are two reasons why someone would want a base like this under their printer.
One is to be able to install 60mm, 80mm or even 120mm fans to replace the crappy stock ones with. And the other being so one can relocate the SD-cardreader so you don't have to squeeze your hand between the spool and your printer anymore.

This project is ready to be tested.
Meaning, that I am printing it right now myself, confident that I will only have to make some minor "quality of life" adjustment in the future, but the design process is pretty much done.

Print orientation:
Keep the parts orientation the way it is right now. Blind holes, alcoves etc are designed to be printed they way the parts are oriented right now. Also, the parts will turnout way stronger if you print them as delivered, rather then flippen them around.

Design steps so far:
- Big "in takes" for big fans.
Upgrading the stock fans with 60/80mm fans isn