Originally Posted by cgalpin
as I get older I start thinking of these things as being unwanted complexity and failure points.
It depends. Using it for something "mission critical", IMO, is evidence of not thinking things through. But using it for compressed air storage (I assume for lockers or air tools) or oil for oil changes while traveling would just be an inconvenience if they failed. Not a show stopper at all.
So yeah, using it as part of your cooling system is pretty dumb IMO.
Originally Posted by Chris Velardi
I have to tell you to get a perfectly air tight weld with a mig is almost impossible
Actually I've welded a number of pressure vessels using MIG. On the other hand, I was an ASME certified pipe weldor at the time. If you have good technique it's easier than stick.
That said, for most people I would tend to agree.