Re: [APML] Vacuum Pump

[swalters@att.net]

George and Dave,

Well, I think you two win the prize for the most 
original contributions on the "Vacuum pump" topic!

Thanks to all for their suggestions!

Steve...

swalters@att.net
http://astrophoto.home.att.net
> Put the pump in a sealed box with a fitting for the output of the pump,
> and connections to the motor. Add one last fitting to the box and let
> the pump pump the air out of the box.
> 
>       Very bad ASCII art
> 
>       |----------------------|
>       |    ____________      |
>       |   |            |     |
>       |   |  PUMP      |     |
>     ====  |____________========= To anywhere else
>       |______________________|
> To film back                    
> 
> 
> George Anderson
> Montreal Canada
> 
> Clear skies and good health
> 
> 
> 
>  
> 
> swalters@att.net wrote:
> > 
> > I have heard that it is possible to modify an aquarium
> > pump to draw a vacuum. I would be using this with a
> > vacuum film back, this is not a very demanding
> > application.
> > 
> > Does anyone know about doing this?
> > 
> > I would guess there is a valve inside the pump that
> > simply needs to be reversed but this might prove
> > impossible on some models, in any case this is a guess
> > on my part.
> > 
> > Any suggestions welcome.
> > 
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