My Keene DW2 Puffer Gate Mod

[Gold Junkie]

Picture should explain itself. It works way better than I expected.  Now that I know this method works to adjust the gate smoothly, I will replace the beam clamp with a 1/4" rivit nut, and use 1/4" rod. The 3/8 beam clamp will not allow me to fold the hopper down with the riffle tray in place. 

Materials used in this prototype version

One 3/8" beam clamp

2 foot 3/8 threaded rod

One "L" bracket

Six 3/8 nuts

Two 3/8 washers.

Two 1/8" rivits for the L bracket

I have less than $15 in to it. It's so much nicer for dialing in your material flow. 

 

[Gold Junkie]

Final product. Replaced beam clamp with 1/4" rivnut. Changed to 1/4" threaded rod, and added a knurled knob.  Works better than I imagined it would. Less than $20 mod if you have the tools.

 

[Wendell Clark]

Nice mod, should work well.

[GotAU?]

I like it, better flow rate control for sure. Not to make you think about reworking it again, but a quick release to allow for faster movement of the gate would be nice….  The Harbor Freight cutoff saw has one that’s a split threaded part that allows for finer tightening of the clamp, but then open the split part to be able to manually adjust it faster. Some type of sliding thread lock mechanism would work.

[GotAU?]

How’s your mod working out?

[Gold Junkie]

On 9/21/2025 at 12:04 PM, GotAU? said:

How’s your mod working out?

It works very well. Actually flawlessly really. Better than I expected it to

[WesD]

That's an awesome idea!  May have to fab one up myself.  I like to swing wide open often, so Im thinking a spin off from your design to run a 1/4" rod through a coupler like this and put a T handle on a set screw to pinch down on it.  So it would be a push- pull instead of threaded.  Anyway, thanks for sharing!

coupler 

Reducer