I give you the SmokeMaster 5000 XH
So after making 12 lbs of Jalapeno/Cheddar sausage I needed a way to smoke it at a pretty cool temp so off I went to the garage to cobble together a ventury style cold smoke generator.
After pondering for a while at Home Depot I returned with these
The 1/4" pipe with the brass do-dads on the ends is the ventury jet and the 1/4" pipe gets mounted through a hole drilled in the 1" cap.
I TIG brazed it since the cap is made of cast or low-grade junk.
The 1" pipe get a slot cut into it to draw in smoke from the wood chips when the jet is pushing air through the ventury.
Here is the assembly
Now on to turning some 1/8" plate into a 4" tube
Lets start with adding some 3" wide flat stock to the 13" wide stuff I had so I could make 4" sides from the end result
I did a simple fusion weld with no filler for this
After that I drilled holes for the ventury assembly and for the 1/4" round bar that supports the ash grate and pre-cut the corners with the plasma, leaving tabs to bend and hold alignment of the edges.
The folded and assembled box
Test run after final welding and assembly. Hard to see the smoke.
Mounted on an old junk masterbuilt smoker that I ripped the electronics out of, direct wired the heater, and control the temp with a rheostat.
The original plan was to supply air via an aquarium air pump but mine wasn't up to the task so I re-configured for Shop air.
Better shot of the smoke.
With the heater off, this will cold smoke at temps below 100*
Ultimately, I'd like to build a smoker as well, but I have this now.
I already have ideas on how to simplify the build... 4" square tube for starters