Magnetic Coupler for Flexible Tubing (3" & 4")

I wanted a quick disconnect air duct coupler for my laser engraving enclosure. Figured this was a good time to learn OpenSCAD to make these. Included the SCAD file if you'd like to make your own changes. OpenSCAD available for free at https://openscad.org/.

Included 3" and 4" versions with 8mm and 10mm magnet holes. 

Printed in Inland Matte Red PLA+.