Here is the part list for cold smoker on my UDS.
I bought my element at Cabelas.
http://www.cabelas.com/product/Smok...ng+element&WTz_l=Header%3BSearch-All+Products
I went to Lowes to get all the parts I needed. I had to buy a 7 foot length of 2 5/8 Chainlink fenceing post. I used the steel heavier one that is not galvenized. I made the first one 14 inches long, but have shortened the one I'm using now down to 12 inches. You also need 2 post caps for this pipe. I am going to order a 3 1/2 in pipe and 2 caps. I think this smoker will run easier if it is wider.I will also be able to use chips and chunks in the larger pipe. This one works great but you have to tend it.
1- 3/4 hole drill bit - you need this to drill hole in post and barrel
3- 3/4 inch outlet nuts (copper if you can get them, if not steel works fine) from the electrical department. You need to thread one nut all the way on 3/4x8 inch pipe. This one goes into the barrel and stops the pipe from going all the way through the hole. On the other end, thread one nut on half way, put the pipe into cold smoker and tread the other nut on from the inside of 2 5/8 pipe. Remember not to drill the 3/4 hole more than 3 1/2 inches from the bottom or youe won't be able to reach the nut.
1- 3/4 x 8 inch double threaded Propane pipe from the plumping section- should be black pipe if it's the right one
1- fitting for the fish pump hose to connect to ( I forget what size it was) You can't put the fish pump hose on the cold smoker because it will melt. Get a coupler and join some black fuel line hose to it. The pump blows the air through the 3/4 x 8 inch pipe and into barrel.
1- adjustable fish pump- I got one with two outputs on it. I used a coupler to make both outputs into one.I think I am going to separate them and put an air fitting on the bottom cap. This will blow air on the smoldering sawdust and make lighting and running more easy. I bought this at the pet store.
1- steel screen I used masonary screen from the concrete section. The smallest piece you can buy is 2 feet by 8 feet. See if you can find someting smaller. I cut the screen to fit inside under the 3/4 inch and air fitting. This lets the ash fall through and holds the sawdust inside the pipe. I drilled a hole straight through the pipe and inserted an allen wrench into hole, this keeps the screen from falling into the ash.
I made a bracket from fence post pieces. The top bracket is for pulling chainlink tight. My unit is removable in case it goes out. See photos!
I only use sawdust in mine. No chips until I get the bigger pipe. I also mix in some crushed up hardwood charcoal with sawdust to keep it burning. I light the unit from the bottom using a propane torch. Once it starts smoking pretty well I put the caps on. Make sure your sawdust is really dry. I dry mine in the UDS for two hours at 100 degrees.If you don't see any smoke leaking out of the bottom cap, tap the bottom side of pipe, your sawdust is not falling. I tap mine once in a while.
I'm still tweaking this unit so if you have any suggestions please feel free to tell me! Some time this week I will post photos of my UDS and cold smoker, I am Smoking deer jerky right now. Good luck!