Not for sale yet
4 Inch Blast Gate, Design Preview
A blast gate design we are still working on.
- Design preview only.
- Blade rides in an open gap between two flanges.
- Seven printed parts and four M5 bolts and nuts.
- Air leak at the gap not measured yet.
About This Part
A blast gate opens and closes a duct line. On many gates, fine dust packs into the track under the blade and the blade stops sealing.
We drew a gate where the blade rides in an open gap between two flanges, so loose dust can fall out. It is a design, not a finished product.
That open gap is also a place air can leak, and we have not measured how much. The gate is seven printed parts plus bolts, and we have not tested one. It is not for sale.
Who it is for: Anyone with a ducted 4 inch system who wants to tell us they would use this gate.
Specs
4 Inch Blast Gate FAQ
Why do normal blast gates get stuck?+
Fine dust falls into the track under the blade. When you push the blade closed, it can pack that dust into a hard plug. Over time the gate may not close all the way.
How is this gate meant to stay clean?+
The blade rides in an open gap between the two flanges. Loose dust is meant to fall out the bottom of the gap. We have not tested this.
Does the gap leak air?+
Probably some. The gap is open around the bore on purpose. We have not measured the leak, so we cannot say how much.
What holds the two halves together?+
Four M5 bolts and nuts, with four spacers setting the gap the blade rides in.
