4" Vacuum Dust Port Coupler

thingiverse

The 4" dust port on my Grizzly 14" band saw was exactly the same OD as the 4" Y-adapter that I bought to run an added 2.5" hose up next to the saw blade to capture dust there. I was having to use a mixture of popsicle sticks and duct tape to secure the Y-adapter to the rear dust port. I measured the OD of the band saw's dust port to be 3.9", and the OD of the Y-adapter's 4" inlet to be 3.93" OD. I set the ID of the printed coupler to 3.95" on both ends. This created a snug fit to both the band saw's port and the y-adapter, which slid into the coupler with a snug fit. The thickness of the part is 0.15", which is the same thickness as other store-bought plastic adapters that I have purchased. This coupler should be compatible with most any other tool that has a 4" dust port on it for a dust collector hose.