Is this nessary for every coat of paint?
How do set your gin for this , I know it is to be a lite coat, but cant this cause orange peal?
If you explained this befor I missed it ?
Would you please explain ?
thanks T.C.

TC, "I know it is to be a lite coat, but cant this cause orange peal?"
you are VERY right. This is one of the great "left overs" from the synthetic and acrylic enamel days that is largely wrong with todays urethanes.

If you go to the tech sheet on ANY urethane product you will not see this mentioned, yet people continue to use this outdated procedure.

Urethanes by their nature don't like to be "rewet", so if you apply this "tack coat" what you have is a dry first coat that you are then fighting through to the end. With modern two coat high solids urethanes, your first coat should look EXACTLY the same as the last.

The set up is the same for both coats. In the old days with acrylic enamel and a conventional gun, the set up wasn't as critical first of all. That aside, there would be no change to the gun from the tack coat to the "first coat". That tack coat was important. But with urethanes and proper gun set up, flash time, and solvent choice it really isn't used.

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Thank you!!!!
I wondered why it wasnt mentioned, but still all the old timers will tell you "ya gotta put a tack coat on first" I guess this is another reason to read the product data sheets and ask questions of those who keep up with current products.
I guess this holds true for the primers and sealers as well.
thanks for answering my question.
T.C.