I thought I share what I have started in the old farm shop.
In the same vein as my mini 16 gallon UDS, I've started to build a mini 30/16 gallon double reverse flow
I've scored two free barrels
I'm going to mount the 30 gallon horizontally across the top of the 16 gallon drum
I have already cut into the 16 gallon to fit tight to the 30, as welll as disecting the 30 for the lid. They are welded together already, but I have no pictures. I will stop by the shop and get some tonight.
Thanks for looking.