I don't think you understand the bernoulli pump, the fluid is not
pressurized, it is "pulled along" by the airstream.
So it can recirculate just fine.
However I suspect there might be trouble with etching uniformity.
ST
On Fri, Dec 14, 2012 at 5:15 PM, <psykhon@...> wrote:
> Its not viable becasuse etchant does not recirculate, you just pump it out of the vessel and to the board but if you try to put it back in, it will loose presure and stops spraying.
> To put it back in without pressure loss, it will need a pump capable of more pressure thats in the chamber, so the whole thing becames ilogicall.
>
> Another way is to have LOTS of etchant and a very powerfull air pump to compensate for the volume, Raising cost to an unpractically level
>
> However this is the kind of ideas that migth contribute to something in the future so I dont consider it a waste of time to give it a thougth or two.
>
>