(10) Flanges & Miscellaneous Round Dust Collection Fittings

This is a collection of round flanges and adapters designed to optimize airflow and connect various hoses and pipes in a workshop dust collection system.

I will be adding more models to this collection as I design them for my own shop. If you need a custom size, specific modification, or a unique clearance adaptation, feel free to leave a comment with your dimensions and I’ll do my best to slice up a variant for you!

I also have other dust collection fitting found here:  https://www.printables.com/@DPs_Designs_4882792/models

AVAILABLE ACCESSORIES:

2'' to 1.25'' VAC Hose End Ramp Fitting:                                                                                                                                     Designed to insert into the end of a shop vac hose for improved air flow.

• Outer Diameter (OD): 2.1"

• Inner Diameter (ID): 1.215"

• Length: 1.16"

• Wall Thickness: 0.1875" at the top, tapers inward to the ID

4'' Internal Ramp Insert:                                                                                                                                                                  Designed to fit inside of a 4" fitting to smooth out steps and create a high-efficiency transition.

• Outer Diameter (OD): 3.65625"

• Inner Diameter (ID): 3.5"

• Length: 1.5" long

• Wall Thickness: 0.018125" at the top, tapers inward to the ID

4'' Flanges (Tapered & Non-Tapered):                                                                                                                                            A set of two flanges designed to attach to opposite sides of a 4" hole or connecting two 4" hoses together. Available in two versions—standard or with recessed captive nut pockets.

• Outer Diameter (OD): 4"

• Inner Diameter (ID): 3.5"

• Length: 1.5"

• Mounting Base: 0.5" wide collar featuring six .165" diameter holes.

• Airflow Note: The tapered version features a 0.18125" top wall that tapers smoothly to the ID to minimize static pressure loss.

2.5'' Flanges:                                                                                                                                                                                                  A scaled-down version of the 4" flanges, excellent for smaller benchtop tools and shop vac lines. Available with or without captive nut inserts.

• Outer Diameter (OD): 2.5"

• Inner Diameter (ID): 2.125"

PRINT SETTINGS: 

• Resolution: 0.15-0.2mm 

• Infill: 50-100%   

• Supports: No 

• Material Suggestion: PETG or ABS/ASA is highly recommended for the high-vibration environment of a dust collection system, though PLA works fine calm areas and if your shop doesn't get excessively hot.