Smoker build

[Lefty15]

Good morning everyone, i am a new member as of this morning. I am going to be building myself a smoker for at home to smoke sausage and do large batches of jerky. I plan on building a 36" x 48" x 72" high I am going to use 1 x 1 x .100w and make a steel frame and then sheet with plywood and insulate.
My question for you guys is do i need to cover the inside with anything or can i just leave the wood exposed? If i need to cover can i use carbon steel or do I need to go with aluminum or stainless?
Any help would be appreciated.

 

[gmc2003]

Welcome to the forum Lefty, you may want to repost in the smoker builds forum for more responses. Sorry I can't help as I've never built one.
Here's a link: https://www.smokingmeatforums.com/forums/smoker-builds.197/
Chris

 

[SmokinAl]

There are plenty of guys on here with plywood smokers, uncovered & uninsulated.
Al