Steve's 4" Blast Gates

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2 comments
Steve Moloney

Project by

Steve Moloney

General Information

4" blast gates. Use sewer line PVC and fittings.

I cut a coupling in half so you only need one per blast gate.

To go to the standard dust collector fittings . Line the inside of the coupling with a piece of the 4" pipe then the standard couplings will fit in perfect.

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Pieces and parts

1/2" MDF 3/8' Dowel 2 @ 1" 3/8" Dowel 1 @ 4" 1/4" - 20 x 5/16" Pronged T-Nut 1/4" x 2' Bolt 1/4" Washer 4" Sewer and Drain Coupling. 2 rings cut from it at 1-1/2" 1/4" drill Bit 19/64" drill bit for T-nut 3/8" drill bit

Phillip lunsford

Thank you Steve. This blast gate is excellent.

Phillip lunsford

Andrew Sander

Made a bunch of these for my parents new woodshop space. They work great with no leaks. Thanks Steve!

Andrew Sander