Downdraft router inserts for JessEm Router Lifts

I built an under-table dust collection box for my JessEm Mast-R-Lift II, but the router was still throwing chips off to the side. These insert rings seem to fit perfectly and significantly improve the dust collection ability of my downdraft box.

Size in filename refers to the diameter of the central opening for your bit.

Printed top-face-down in PLA on a Prusa i3 MK3S+ with a .6mm nozzle at 0.15 layer height, 25% infill, 4-line brim, 3 perimeters, and organic supports.