FYI if you have problems keeping the AMNPS going look into the AMNTS tube smokers from Todd. They do better in the propane smokers. I use mine in my propane smoker and they do good until you get above 285. Then the pellets quit smoldering and ignite.
Thanks for the information, I'm really not sure what to expect yet. I will be installing a 3" air vent in the door for fresh air. The AMNPS should benefit from sitting in front of the vent (I think).
Im also worried what the safe operating temperature of the smoker will be. I've used the search bar and have read several threads on the subject but everyone seems to have a different answer. I have read anywhere from 190 degrees to 250 degrees. I just don't want this box to turn into the largest Roman candle that anyone has ever seen.
Worked on the lower door vent today.
The vent will be regulated by a sliding piece of sheet metal.
Time for some old school table saw work... channeling out the interior. Edited by Dirty Don - 1/26/16 at 9:48am
Put a tray of pellets in for the first time today just to see how she would act.
This picture was taken after a couple hours with both the top and bottom vents fully opened.
I then shut both vents down completely, the only draft would have been from the roof opening. After 3 1/2 hours with the vents completely closed the tray looked like this. Hopefully she will be this consistant with the propane.