Thanks.
One of the arches had a scuff in it that the paint didn't fill so I flatted it back and resprayed it.
I usually add about 10% thinners to spray 2K paint. The key to a good finish is even coats and timing.
As you can see the first coat is a very light dust coat. The reason I do this is to reduce the chance of fish eyes.
After about 5 mins the paint starts to go tacky (double the times in winter) The second coat is a bit thicker but still the finish is poor. It's easy to rush at this stage and get too much on.
With 2 coats on, the drying time increases so after about 10 mins, I spray the third coat on
What starts to happen is the last coat starts to melt into the previous coats. This causes the paint to start to flow out. It's not yet there though.
Fourth coat going on. To the left of the line is the right amount of paint allowing it to flow out. To the right, not enough and it's orange peel effect. This is known as going on dry
The paint flows out for some time, this is the result
This is where I spray stuff. If you get 2K on the patio it won't come off. I know from experience
Hope that was helpful
Pete