Insulated vertical cabinet smoker

[Kylem.cmp]

I've been looking at designs other people have posted and got a few ideas on what I'd like to make. I still have alot of questions. Interested in reverse flow one.

1 does a Insulated vertical cabinet smoker follow the feldons calculator?

2 I've never seen dimensions on the race way or smoke stack. How do I calculate that?

3 is a brass ballvalve for fire box air inlet safe for cooking?

4 most people had baskets in the firebox, is that for more of charcoal ? I cook with logs 99% of the time.

5 between the cooking chamber and fire box do I insulate, leave basic .25" metal or up grade to .5"?

6 is a Waterpan/ drip pan needed for regulating temps? Never used one before


Picture below is a drawing I saw on another build but its similar to what I want.