On 23 Nov 2005 14:50:00 -0800, "Rick" wrote:

Trying to understand if/why I would need 10 bar, all my air nailers
etc. run at around 6 bar or less.

10bar is more stored energy in the tank than an 8bar machine, even if
you're still only using it at 6bar. This doesn't make much difference
for continual sandblasting (you'll need real compressor capacity) but it
does allow you to run a "thirsty" tool in short bursts which the
compresor wouldn't otherwise have the volume capacity for.