Hey Donald: Congrats on locating a barrel ! That's the permies way ! Hopefully you explained
RMH's to them and one of them will want to build a RMH as well ! Couple of tips for you. Stove pipe) you only need the expensive black pipe where the highest heat is or a high abrasion area , any other place you can use hvac thin wall pipe... MUCH cheaper ! Readily available in 5' lengths. Refractory cement) You don't need it... A very thin layer of Fire clay and sand mix is how you (cement) your fire bricks together. Locate a masonry supply house , they will
sell full fire bricks and 1/2 thickness fire bricks and maybe even insulated fire bricks ! They will also stock fire clay in 50# bags. Do not try to find fire bricks at the big box store ... IF they sell them they will be outrageously expensive being called
wood stove replacement bricks . A brand new heavy dense fire brick should cost 2-4 $ no more. Fire clay should be $ 10-15 a 50# bag. Regular clay for general cobbing is found near creeks or on a forest road , or talk to a contractor who is digging foundations . County road crew could tell you where there is a clay pocket near a road. Oh YEA , BUY the RMH builder guide ... available at amazon and many other places. it will keep you from making common mistakes . Sand is the other thing you will need .. more of it than clay ... No ocean sand but any creek sand will work fine.