Homebrew PCBs

What is "Steve's Cleaning Mix"?

 

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From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
On Behalf Of Russell Shaw
Sent: Thursday, June 01, 2006 12:38 AM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] Re: Unblocking epsons

 

Steve wrote:
> --- In Homebrew_PCBs@yahoogroups.com, Russell Shaw <rjshaw@...> wrote:
> 
>>Any idiot can see that relying on the vacuum pump to clean the
>>nozzles is useless if the first nozzle to run freely prevents the
>>other nozzles from being cleaned!
> 
> Let's keep it civil.
> 
> A peristaltic pump with a hose hundreds of times larger diameter than
> the nozzles... I don't think it's quite that clear cut, if it were
> then the vacuum pump cleaner would be completely useless.

The surface tension is a constant of the fluid. The force required to
form a droplet is independant of nozzle diameter. Therefore, the Pascals
required to form the same surface deflection is proportional to 1/area
or 1/diameter^2. Increasing the peristaltic pump hose diameter will make
no difference whatsoever. The vacuum pump is only for taking away the
fluid and forcing it into that fat dunny-roll inside the printer.


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