Re: Compressed air
Hi All,toggle quoted messageShow quoted text
There is no such thing as "canned air" really. All of the "canned air" products on the market have some sort of gas (not air), which when compressed, becomes liquefied. It is the vapor pressure of the liquid which provides the pressure to blow off the dust. As you let some gas out of the can, more evaporates to maintain a relatively constant pressure until the liquid runs out, and then the pressure quickly drops.
If instead you take a old can of "canned air" and put a Schraeder valve on it so you can re-fill it with an air compressor and put actual air in it, you will be sorely disappointed (as I was). The physics is pretty simple and the pressure will just decrease exponentially as you let the air out of the can, and it rapidly becomes useless. I get about 5 seconds of useful dusting pressure out of a can before I have to re-fill it. It's good for a blast or two.
I HIGHLY recommend using an air compressor and plumbing your shop as opposed to using portable canned air products. Even the Non-CFC versions are really nasty stuff to the environment. They don't kill the ozone layer, but they contribute substantially to global warming. See:
I don't mean for this to roam off-topic, but since it was brought up, figured I'd mention it. Also hope no one wastes their time trying to re-fill a duster can as it just doesn't work.
On Wednesday, May 1, 2019, 10:19:01 AM EDT, David Kuhn <Daveyk021@gmail.com> wrote:
I plumb the shop with a compressed air (and a compressor in the garage). I
use a small dryer in-line with the spray naucial (sp).
On Wed, May 1, 2019 at 10:13 AM Caveman <firstname.lastname@example.org> wrote:
Photographer as well as a repair tech here, and I say do not shake cans of