I ended up doing low density elements from amazon, following a simplified version of this design, which needed a couple of these 1" fittings from bargainfittings.com. It worked out pretty well.
How are you welding, yourself or asking for help? I ended up using this method:
I...
I can try to answer some of your questions, I built / have been using a brewtroller build for a couple years now.
You can see some old posts about it here
> 1. I want to add a electric element in the HLT. Can i do this with brewtroller while running propane on the other side for the...