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Old 07-16-2009, 07:53 AM
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Temp range, what to do?

So I have this Saturday all lined up to spray my project. The temps here have been in the upper 80's lower 90's for a few weeks now. So I bought slow reducer and hardner. 85+ temp range.

The problem:
This Saturday the forcast looks like it will only get to the low 80's.

The question:
Can I still shoot with the slow reducer and hardner? Should I just postpone until another weekend? Just Lenghten the flash time?

It takes alot of planning the get the wife and kids out of the house so I can do this, my kids are small so I don't want them around the fumes and my wife has terrible asthma so she can't be there. Not to mention the cleaning of the garage to be clean enough to shoot has already been done.

Any advice?

Last edited by Why J?; 07-16-2009 at 09:04 AM. Reason: Can't spell.
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Old 07-16-2009, 09:09 AM
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A few degrees up or down is not a problem with painting, humidity is . If the humidity is low , then if the temp is in the low 80's, ..........paint it. You will be fine and the paint will be as well. Don't change your plans!!
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Old 07-16-2009, 09:18 AM
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I normally use slow reducer even if the temps are bit lower, just allow good flash times.
A slow reducer will allow more time to get around the car and paint to melt into areas previously sprayed, allow the paint to lay down better, and the surface will stay open longer to allow solvents to escape
In low 80's I wouldn't think twice about using a slow reducer/hardener. About the worst a slow solvent for conditions would cause is more of a tendancy to run and at 80 really shouldn't be a problem, and a run or two sure beats problems that can occur if solvent selection is too fast, solvent pop, dry spray, or a surface that requires quite a bit of leveling smoothing out roughness or orange peel before buffing.
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Old 07-16-2009, 09:30 AM
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The humity today is 90%. It is suppose to rain today, tonight and possibly on Friday afternoon. Looks like sunny skies and a high to be 80 with a low of 63 on Sprayday. So I expect the humidty to not be a problem. If the hunidty is a little high I can control that somewhat in my garage. I have a dehumidifier that works really well. It's able to keep things around 45%, most of the time.

I will need most the day to spray so the low early afternoon temps are what concern me. I think it may be in the neighborhhod of the mid to upper 70's when I start. would this be a problem?

I really think I'm starting to over think this whole thing.
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Old 07-16-2009, 09:43 AM
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yep.........you are overthinking this.............as long as the temps don't get below 65 and the metal temps are in the same range as the temps you are spraying in, then just do it!!!
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Old 07-16-2009, 10:48 AM
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To many variables.

I'm just trying to do whats best. I have 1 shot at this. I can't really afford more materials.


Just kinda nervous I guess.

The funny thing is when i was spraying SS stage I never had any idea that temps, humity or anything would effect the paint and I never had an issue. Granted the SS was enamel but still never had an issue. Just stirred, poured and sprayed.
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Old 07-16-2009, 01:21 PM
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Turn on the dehumidifier and paint. The temps in TN will be fine to paint in. You have all this planned, wife out kids out...............go paint.
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