4" to Dual 2.5" Dust collector splitter

This is an adapter to go from 4" to dual 2.5" dust collector port. The purpose of this adapter is to maintain as much suction from a 4" dust collector as possible to minimize pressure head loss due to reduction in diameter. The angle of the outlets relative to the 4" is 30 degrees with a fully smooth transition inside.

I made this slightly thicker (0.1") inward than the typical 0.08" sidewall. This should be printed with the 4" side facing the printer bed.