[TheForge] Fwd: fridge compressor?

[Dave Brown]

The following was part of a discussion on another list that I'm part of.  I 
thought it might be interesting to some here.  I'm not necessarily 
advocating this approach (after all, I have a bit bigger compressor 
already), but it may appeal to the "scrounger" blood in some of us.  Not a 
big air supply, but more than enough for some things.

Dave Brown

>Yes.  An empty, out-dated propane tank is just fine.  Remember that a 
>fridge compressor doesn't deliver a lot of volume but can go to 150PSIG. 
>The tanks are rated for 300PSIG I think, by once you've got all the 
>plumbing done there is wisdom in hydro testing the setup nevertheless,
>Remember that air at 150 PSI can be deadly dangerous. It doesn't matter if 
>it took you ten minutes or two hours to get the 150 in the receiver. If it 
>blows up, you've gonna get hurt. You might very well get dead.  So hydro it.
>
>As far as the pressure switch goes, yes, you can make your own if you're 
>handy, or you can buy 'em quite cheap.  Even at cheap the switch is likely 
>to be the most expensive part of your system.
>
>Sam