Anycubic i3 Mega Custom hotend cover + 2x fan duct + laser mount holes

####About
This thing is designed to replace the original metal cover and fan duct of Anycubic i3 Mega 3D printer.

####Updates
+ 06.11.17 - Initial upload
+ 10.11.17 - Added the version with no cover. You should use it with the original metal covering. Some holes were enlarged a little for easier mounting. All files reuploaded.

####Main features:
1. No metal drilling or even additional screws are needed to assemble. Never the less, using thread tap is recommended since the holes are a l