Venturi Cold Smoker 

I see that the can you used has a lining. Im not sure if this ever ends up in the smoke, but when I build one I am going to be avoiding lined cans. For your health! thanks for the vid!

copper cookware, kettles even stills for the mash pot and the cooling pipe. Copper is a excellent metal to use for cooking

good job. will try that, hoping the smoke is cold ,Thanks Frank

The baffle goes over the pipe to keep the wood chips away from the opening at the bottom, so that the wood chips fall in the direction of the burning hole.

I tried this design and think it is flawed. Having the pipe at the bottom allows wood chips and ashes to block the smoke intake hole of the pipe. I moved the pipe to the top of the can where the hole is unrestricted and where all the smoke rises anyway. It worked much better. I also put a 1/2" spring in the can that runs from top to bottom. This allows more air flow from the fire hole, so the wood chips keep burning.

The Baffle goes over the pipe and the opening in the pipe shows to the bottom of the can. The ash falls out the side. Yes you can have cap to foil to seal the top. This worked for me.

At 3:51 you can see it burning, you light the sawdust when the pump s running. I use it in a drum smoker or gas BBQ to smoke chicken and Pizza.

An extra tin can be a hopper and that can go for 1.5 - 2 hours.

This is the dogs bollocks, have used this for about 2 years, cold smoked salmon, bacon & cheese.

Parkits Law states that if J=M/4 then maximum smoke can be generated for the least energy expended. I am not sure this divide follows this principle!

I used a 1/2" piece of copper pipe and I don't see an issue with it.

Good afternoon Can answer a question? Excuse for my language - I Russian) For what term of smoking this suffices banks with chips? If to make big to bank on 3-5 litres - where ashes will disappear and for what term such volume will suffice?

I tried to make this vessel according to your vids (2) and the accompanying texts having trouble with the air from my pump(4W) pushing the coals and smoke out the fire hole . Not getting the venturi effect to work here , does the can have a lid on it , and is the can sealed on the exterior of the large pipe and where the small pipe enters on the inside of the can is it sealed there too ? I've converted the metrics to inches and I have a 1" pipe with a 1/4" small pipe and the same dimensions ? Where do you face the cutout section of the large pipe under the baffle ? Up ,down , sideways ? and is this large pipe contoured and sealed to the inside of the can and what is the can size ? Sorry about the specifics of your design , I just can't seem to get this to work for me .

No it is not, did you use a baffle? I have used it numerous times over and over again!

Would you normally use a hopper for the wood chips? If not how long of a smoke would you get?

What is your source of fire, is it a gas burner?

where does the ash go?

It falls out the burn hole.

I am not a metal guru but I know cold steel pipe is fine, that is why I use steel, copper is used for hot water so it might be fine but I will not put my money on it.

step by step method written out, do a google search for "DIY Venturi Cold Smoker" and look for homebrewtalk it should explain it for you

My newest cold smoker: ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-6Ud9IRSqFmI.html

Please never heat/burn/weld any Galvanized metal when making your projects. Look up "Metal Fume fever"

Only steel pipes !

you show how to build it but you dont show how to light it 2 thumbs down.