Here are some pictures from my resent build using a 500 gallon propane tank for the CC. I built this outside because I do not have a big shop. I bought a acetylene torch off Craigslist and bought a cheap welder at harbor freight. I also found a cheap trailer on Craigslist. I tried to use what I could to get this built without going to the bank for a loan. Here is the 500 gallon propane tank. My neighbor farmer brought his tractor over and unloaded it off the trailer. I cut some RR ties and set it on them.