Even better still (and I do this), a divers bottle, but be I have to be really careful as mine are pressurised to 300 bar whic
Thanks for mentioning that; you got me thinking. Recreational scuba diving is a hobby of mine, and I keep a scuba cylinder handy. I do have a scuba regulator. Tank pressures (I think in PSI, not BAR) vary with whether it's an aluminum or steel cylinder, high pressure or low pressure, but generally in the 2,000 - 3400+ PSI range. The regulator sends one line from the tank to the 2nd stage the diver breathes off of, and a different line to the inflatable/deflatable dive vest (BCD) via a low pressure inflator - the regulator cuts tank pressure to an intermediate pressure around 125 PSI, if memory serves.
I say this because there's a tire inflator attachment for the low pressure inflator hose, and it's not all that expensive.
Promate Tire Inflator/PI050
www.amazon.com
I have one tucked away somewhere. Might be worth testing out sometime whether I could use it as an air blaster. I'd feel a little safer vs. taking the main tank and just turning the valve (which is adjustable; it's not like one has to turn the thing all the way open, but still...).