EM 6500 cure time and coating with SC 9000

[Kodi Crescent]

Hi.  I'm spraying some bookcases with EM 6500.  I plan on coating with SC 9000.  How long do I have to wait for the EM 6500 to dry or cure before spraying on the SC 9000?

How many coats of SC 9000 do most put on?

Thanks!

 

[tiralie]

Hi.  I'm spraying some bookcases with EM 6500.  I plan on coating with SC 9000.  How long do I have to wait for the EM 6500 to dry or cure before spraying on the SC 9000?

At room temperature (70 degrees) I wait about two hours. Here is post on Target coatings forum forum suggesting that I am doing it incorrectly.

How many coats of SC 9000 do most put on?

Usually only one coat unless it's a table top.
Tim

 

[tjbnwi]

Some day I'll have to try these Target products.

Tom

 

[Kodi Crescent]

Awesome.  Thanks!

 

[tiralie]

Awesome.  Thanks!

Kodi:
Just a reminder to Make sure you stir the 6500 and the 9000 very well, I mean scraping the bottom of the can stirring. If you stir and feel a thick layer on the bottom you need to make sure those "solids" are completely stirred into the rest of the can otherwise you will get the wrong sheen (EM 9000) or pin holes from trapped bubbles (EM 6000)
Tim

 

[Kodi Crescent]

Thanks.  How thick a coat of 9000 do you put on?  Enough to wet the surface, or a specific thickness?

 

[tiralie]

Thanks.  How thick a coat of 9000 do you put on?  Enough to wet the surface, or a specific thickness?

Kodi:

Yes, basically a wet film 1 to 3 mil thickness on horizontal surfaces, on vertical surfaces I cut back (slightly) on fluid delivery at the gun, and focus on an even wet coverage, I hate cleaning up runs. It's fairly forgiving and levels out nicely.
Tim

 

[Kodi Crescent]

I got the runs.  :'(

 

[tjbnwi]

You have to learn how to lift them (runs) out with masking tape while they're still wet and flowing.

Take 4-6" masking tape, hold between both hand with a droop in the center, place the droop on the run and lift it off. Showed someone else how to do this, lifted 3 of his runs off, the next morning we could not find any sign of the problem.

These types of things are part of the learning process. Been there, done that. Still do it rarely.

Tom

 

[tiralie]

I got the runs.  :'(

Oops, oh well. You will be better next time.
Carefully sand or use a blade to shave them off and re-coat.
Should be fine.
Tim

 

[tjbnwi]

Drag a razor blade across a piece of 1200 grit carbide sand paper. Pull it only once. This will put a very tiny burr on the blade. Bend the blade slightly so the burr is to the convexed side.

You now have a small pull scraper to remove the run. Works great on touch up auto paint also.

Tom

 

[Kodi Crescent]

I hit a wet side with the hose and it left marks.  Then I sprayed it to try to cover up the marks by spraying more.

Thanks for the run fixing tips.  I'll have to give those a try.

 

[tjbnwi]

Surprising how little it takes to get a finish to run isn't it?

You should have left the marks flow themselves out. Patience is your best friend when finishing. If the marks did not flow out completely when dry, you could have protected the other suffices and addressed the marks with little grief.

Tom

 

[tiralie]

You should have left the marks flow themselves out. Patience is your best friend when finishing. If the marks did not flow out completely when dry, you could have protected the other suffices and addressed the marks with little grief.

Agreed. 9000 will level out fairly well as long as it's left alone after a little bump.
Tim

 

[Kodi Crescent]

My first time finishing.  Live and learn.

Do I sand the final coat with anything?  If so, what grit?

Was the razor blade run tip for when its wet or when its dry?

 

[tiralie]

My first time finishing.  Live and learn.

Keep at it, you'll be giving us tips soon.

Do I sand the final coat with anything?  If so, what grit?

t
I usually scuff the previous coat (entire panel) with maroon scotchbrite pad or 400 paper. Wipe down with distiller water, let dry and recoat the whole panel.

Was the razor blade run tip for when its wet or when its dry?

Dry. Use the tape trick on wet drips.
Tim

 

[tjbnwi]

Dry, it works as a pull scraper and peels the finish off in ultra thin layers. With the slight bend you put in it there is very precise control. Ever see the build up from touch up paint on a automobile? The razor allows you to peel the build down level with the surrounding paint. A little polish and all is right with the world. If you tried to sand the build level it causes all kinds of issues with the surrounding finish.

Normally would not sand the final coat.

Tom