Kobra 3 Max Full Airflow Duct

Full Airflow Air Duct to suit Anycubic Kobra 3 Max, this gives full legnth airflow on both sides unlike the stock one which is one full side and half the other. This also allows front flow also. This is a working progress and happy to listen to any suggestions. I have conducted some torture test and all tests have come back with good results.

The magnet hole is to suit a 6x3 magnet.