Dust collection adapter for vintage Craftsman Shaper Table or Router Table

If you happen to have one of these 1950’s era shaper tables, they were made before dust-collection and shop-vacs were a thing! This adapter fits snuggly in a Craftsman shaper table, and fits dust-collector or vacuum hoses of 1.75” outside diameter. CAD file available by request. If it helps, this shaper table is Craftsman model 103.23940 and takes 1/2” hole-diameter cutters.
I printed it “upside down” - with supports enabled, so that the z-axis runs the length of the hose adapter, rather than around its circumference (as shown in one of the photos)