[pure-silver] Re: floor vibration?

A lot may depend on just how big of a fan Shannon is using.  Opening the floor 
up means giving an opening for all sorts of rats, mice, snakes potential access 
into the darkroom floor.  I'd lot rather have them finding shade between the 
concrete and the floor than in my darkroom if there was any other option.  In 
the dark a small rattler would be hard to spot.  Maybe worse would be mice 
chewing or electrical cords and the like.  You would be amazed at what can fit 
through what size of an opening.  In Texas those pest can be a real pain in the 
you know where.

Putting an extra switch in for the room lights and the vent would be easy now 
before the drywall is up might be a good idea.  But those walls are secured to 
something that should be secured to the slab.  The slab isn't going to vibrate 
from that.  The flooring nailers aren't likely to move either.  Now a wall 
mounted enlarger might be a problem.  Im no builder and I didn't stay at a 
Holiday Inn Express last night, but I would expect you to be fine.


--- On Mon, 9/29/08, Bogdan Karasek <bkarasek@xxxxxxxxxxxx> wrote:

> From: Bogdan Karasek <bkarasek@xxxxxxxxxxxx>
> Subject: [pure-silver] Re: floor vibration?
> To: pure-silver@xxxxxxxxxxxxx
> Date: Monday, September 29, 2008, 11:32 PM
> Hi Dennis,
> 
> The problem with fans is that they don't stop on a
> dime,   probably 
> stopped by the time the print was exposed, so you still
> have some 
> vibration, albeit decreasing, still a problem.   Isolating
> it with  
> bungee cords or rubber straps or other damping material
> might reduce the 
> vibration sufficiently or at least dampen it.
> 
> I liked the suggestion of drilling through the floor and
> setting the 
> enlarger and table through the holes and setting them on
> the concrete 
> slatb which is the garage floor.  A friend of mine,
> he's an audiofile, 
> the best audio equipement, he drilled through the basement
> floor to the 
> concrete and installed steel 4 legged stands for his
> speakers.    My 
> Omega D-2 is mounted on an Omega wall mount which is
> attached to the 
> basement concrete foundation.  It's also attached to
> the wall at the 
> top.   very sturdy
> 
> Cheers,
> bogdan
> 
> 
> 
> Dennis Purdy wrote:
> 
> > My enlarger timer has a plug marked "safe
> light" on the back.  
> > Whatever  is plugged in there automatically goes off
> when you start 
> > timing  something.  If you put the fan on a plug and
> plugged it into 
> > the  safelight plug on the timer it would run all the
> time until you 
> > hit  print.. presto no fan no vibration for a little
> while.
> >
> > Dennis
> >
> >
> > On Sep 29, 2008, at 14:06, Shannon Stoney wrote:
> >
> >> I have a question about the new darkroom that
> I'm building in a 
> >> garage  in my back yard.
> >>
> >> My old darkroom was a box inside a garage.  The
> floor was a concrete  
> >> slab.
> >>
> >>  In the new darkroom, we had a wooden floor built
> on top of the 
> >> slab,  because the slab was so uneven.  The walls
> are now tied in 
> >> with the  floor, and there is a vent hood mounted
> on one wall, with a 
> >> fan on a  shelf next to the hood to pull air
> through the vent hood.  
> >> In the old  darkroom, the vibration from the fan
> vibrated the wall, 
> >> but not the  enlarger, because the enlarger sat on
> a table on the 
> >> concrete slab.
> >>
> >> Today I suddenly got worried that the vibration
> from the vent fan on  
> >> the vent hood over the sink would vibrate the
> floor, because now the  
> >> floor is tied in with the wall.  Then if the floor
> vibrates, the 
> >> table  that the enlarger sits on might vibrate
> also.
> >>
> >> So, what should I do to prevent this from
> happening?
> >>
> >> --shannon
> >>
> >>
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> -- 
> ________________________________________________________________
>   Bogdan Karasek
>   Montréal, Québec                    
> bogdan(at)bogdanphoto.com
>   Canada                               www.bogdanphoto.com
> 
>                      "I bear witness"
> ________________________________________________________________
>  
> 
> 
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