Cold Smoke Generator

Cold smoking is carried out at temperatures approx 25 ºC, whereas hot smoking takes place at temperatures > 65 ºC.

So be careful: prepare your foor adequately when cold smoking because the temperatures makes unwanted bacterial growth more than likely. There is a wealth of fine literature on the internet how to cure your food so that Cold Smoking becomes really safe. See for example here 

The Cold Smoke Generator I build follows the often used principe of a Venturi Generator, which can be found all over the internet. This kind of smoke generators are also commercially available.

For a impression of the first version see a short YouTube clip.

Partslist & 

40 cm steel square tube 80*80, thickness: 2,5 mm.

This steel square tube is the most expensive part is you do not have it at your scrape belt. In this tube we will make two holes at the top. exactly opposite aligned and an air intake at the bottom of the tube.

We need steel gauze, approx 8,2* 50 cm.

We need one Brass Compression Fitting, Straight Coupling 22 mm, which part has to be slightly modified.

Brass Compression Fitting, Straight Coupling 22 mm.
 Left: Original Fitting. Right: Modified Fitting

We need something that can serve as venturi nozzle. Try to be inventive. I used a wire curtain rod.

Nozzle of venturi: Wire Curtain Rod 

Wire Curtain Rod, disassembled.
Diameter of screw-thread approx. 12 mm  

The backside of the Wire Curtain Rod is already supplied with 1/4 in. screw-thread. and a brass hose barb with straight fitting style fits.

Wire Curtain Rod with Brass Nose Barb 1/4 in. screw-thread

We will continue the description soon.