Self-Cleaning Blast Gate
A 4 inch blast gate that will not jam with dust.
- Open gap sheds dust instead of packing it.
- Prints support-free: two flanges, a blade, four spacers.
- Bolts together with four M5 bolts and nuts.
- 4 inch duct standard, other sizes to order.
Printed and assembled in our shop, shipped ready to use. Or download the files and build it yourself.
- Sized to your exact portReal specs, not guesswork
- Made in the USAPrinted to order
- Ships in 2 to 3 daysFast and tracked
- PETG, not brittle PLABuilt for the shop
About This Part
On a normal gate, fine dust settles in the track under the blade. Push the blade down to close and it packs that dust solid, so the gate stops sealing. That is the top complaint about blast gates.
This gate holds the blade in an open gap between two flanges. When you close it, the loose dust falls straight out the bottom of the gap instead of packing under the blade. So it keeps closing clean, run after run.
It is built to print clean, even at 4 inch. Both flanges print flat with the spigot straight up, so the bore is vertical and there is nothing to support. Bolt the two flanges together and slide the blade in.
Who it is for: Anyone with a ducted 4 inch dust system who is tired of gates that stick half open.
Specs
Self-Cleaning 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 packs that dust into a hard plug that stops the blade from sealing. Over time the gate will not close all the way.
How does this gate clean itself?+
The blade rides in an open gap between the two flanges, not a closed track. As you close it, the loose dust falls out the bottom of the gap instead of packing. The path stays clear so the gate keeps sealing.
How does a 4 inch gate print without supports?+
Each flange prints flat with the spigot pointing straight up, so the bore is vertical and nothing overhangs. Print two flanges, a blade, and four spacers, then bolt them together with four M5 bolts and slide in the blade.
