Summary A single sided modification of my own "pelvic" style 40mm blower fan. I was finding the dual fan kind of overkill and I'm looking to lose all the weight I can off of my effector... so here it is! Note that the photo is of this model printed in weed-wacker trimmer line nylon. Very tough! I have added a "b" version that has beveled side air exhaust ports. This should both give better direction of airflow and make removing supports easier. Try it!