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Have you ever tried to paint exterior window panes? It is awful.
Currently, professional painters hang on a ladder, dip just the right amount of paint on to their brush. Then they carefully eye the boundary between the brush and the glass, slowly drawing the bead of paint over the pane.
Good
painters can finish a 12 pane window in about 35 minutes. Windows are probably the only section of the house which can't be sprayed, because painters would rather not scrape the paint off of the glass, because it takes forever. Taping is also for amateurs and also takes for ever.
Here goes. At night turn off all of your lights. Then spray all of your windows with photoemulsive liquid, like the kind used in screen printing. After this is done, turn on the lights in your house. After 30 minutes or so, the photoemulsion should harden only where light hits it (the glass).
Go back outside and hose the unhardened emulsion from your windows. You should now have exposed mullions and hardened photoemulsion covering the glass.
You can now spray paint all of your window mullions without getting any paint on the glass, but getting it all on the exposed mullions.
When you are done painting and it has dried, then use deemulsifier to remove the emulsion from the glass.
Hopefully, This will leave beautifully painted window panes with none on the glass.
You should try it... I won't.
Emulsion Remover
http://www.reuels.c...ulsion_Remover.html
[leinypoo13, Aug 13 2007]
Emulsion
http://en.wikipedia...wiki/Photo_emulsion
[leinypoo13, Aug 13 2007]
Single coat paints
http://www.paintedb...m/images/group3.jpg
[normzone, Aug 14 2007]
Is this of any help?
Method_20of_20bulk_...g_20of_20Aeroplanes
[normzone, Aug 14 2007]
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It's mad, but (+) for creative use of darkroom tools. |
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[+]. Better make sure the windows are
clean first, though. |
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The panes are the glass bits(these are also called "lights"). The wooden parts are mullions. All the wooden bits together are the frame. The whole moving bit is called a sash. |
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Rework some of your terminology and you might get more buns. |
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I like the idea, but wouldn't the deemulsifier remove some of the paint on the frames? |
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//The panes are the glass bits(these are
also called "lights". The wooden parts....// |
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Rework some of your parentheses. |
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//Good painters can finish a 12 pane window in about 35". //
sp "35'" |
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' can be used to denote minutes and " for seconds, though these are usually measures of arc (60' = 3600" = 1°). |
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I'm not sure this would work. Windows
are normally painted with two or more
coats, the top coat being a gloss. I
think your de-emulsifier would not
penetrate the paint to dissolve the
photoemulsion. |
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Also, a good paint system (primer/
undercoat/gloss) is fairly thick. If I
decide to scrape the glass rather than
painting carefully in the first place, I
usually have to run a scalpel around the
edge first, otherwise the "green" paint
tears and leaves ragged edges. |
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Might work with some single-coat
paints. |
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[MaxwellBuchanan] You maybe right. The dried paint on top of the emulsifier would be hard to penetrate. You may have to use tons of emulsifier which would probably destroy everything and be very expensive. It would be interesting to see if there is a way around that. |
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I don't know how many modern
windows are mass-produced -
presumably quite a lot. So, let the
window-makers also make a custom
spraying mask. |
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For instance, the mask for a 12-pane
window would consist of 12 flat rigid
rectangles, connected by little hoops.
You just press it against the window -
the flat bits mask the glass, and the
hoops connecting them stand clear of
the mullions. Then just spray. |
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Or, better still, let the guy use a brush.
He makes money, you get a nice finish,
and everyone is as happy as bedbugs. |
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Another trick is to apply a facial mask to the glass, then peel it off later, with the paint attached. |
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i threw a bun at your window and ran. + |
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