Refillable Propane Tank

Good discussion. I'm revising my earlier comment to be clear that I'm not necessarily advocating the reuse of disposable cylinders. 

Commercial refilling of 1lb disposable tanks is illegal, but it's unclear if the same law applies to doing so for personal use. Same applies with regard to transportation on public roads--relevant here since the point of having a camper is to be able to take it somewhere. Local regulations may also apply.

I "know a guy" who recently refilled a few bottles with limited success... ;-)  If you follow the directions exactly you can only get them ~3/4 full. Also, while the cylinders themselves didn't leak post refilling, one wouldn't properly seal up with the appliances.

In light of the legal ambiguity--not to mention to common sense safety issues--the 1lb cylinders designed for refilling strike me as a good investment. While I also use a T-adapter and hose off my 20lb T@B tank, I still like the flexibility of the small cans for some applications.