Need some help with my heat gun setup

[cellardoor]

What's up FC! I was hoping I could get some help with my homemade heat gun setup, I've included some pictures below, the main thing I want to fix is that the pipes I used get very hot (thus the torn shirt wrapped around it) I'd also like to try to find a better place to put the herb (right now put two pipe screens in the tube and put the herbs in-between)

Also any recommendations on what bags to use? Oven bags were way too wide.

 

[Wizsteve]

more common is the cookie jar with glass bowl and tube bags fit into .