Now i'm no expert but i have seen this done with smaller tanks being used as a pressure tank for air.(the size for backyard barbques)
As far as i know the metal wouldn't be porus to hold any residual . Do make sure the tank is empty though ofcourse. Remove the filler/regulator valve.
I would just plumb the old tank into the compressor tank, thus having 2 air tanks, then once you start blasting there will be a head of pressure.
Shaune
the older i get.....the less tolerant i become
67 GTA 390 F/B underconstruction
79 F100 very rusty but mine
92 grand caravan...family wheels
As far as i know the metal wouldn't be porus to hold any residual . Do make sure the tank is empty though ofcourse. Remove the filler/regulator valve.
I would just plumb the old tank into the compressor tank, thus having 2 air tanks, then once you start blasting there will be a head of pressure.
Shaune
the older i get.....the less tolerant i become
67 GTA 390 F/B underconstruction
79 F100 very rusty but mine
92 grand caravan...family wheels