This design is based on the VT2525 RIDGID Diffuser which should diffuse airstream to reduce blowing dust from the exhaust port. I did not place a foam filter in it yet so can't say whether it lessens the sound or airflow.

Pretty snug fit in a Rigid WD4070C model.

Printed on Bambulab P1S with each part taking just under 2 hours due to tree supports used.

Designed in Fusion 360.