Originally Posted by johny1989
if i spray faster with less amount of paint(all the way set to max minus - on the gun) then i will need way too many coats, i mean like more than 12 coats.
Well...that's how it's done. Leastwise by those who want the best results. Drying times will be much faster, so overall you won't spend any more time than otherwise. Done correctly, it should not require more that 8-9 coats.
.............and probably most relevant to you, the hot spotting can often be attributed to having coats that are too heavily applied, therein producing a surface that has more sheen than desired. And be absolutely certain of this...if the paint has that much risk of developing Runs, it IS
being applied too heavily. "Dusting" means exactly that....applying the paint in a "spotty, dusty-like" manner. When this is done, and especially with the last 2 coats, the surface will diffuse more light rather than reflect the light more back toward the source.
Trying to interpret "Max minus - " ? If you mean turning the gun's air output to the lowest setting,that would be the wrong way to do it. Instead the Gun should be set to maximum Air output, but the quantity of paint being applied (...out of the Gun and onto the screen...) is NOT reduced by limiting the amount of Paint exiting the Gun, it is regulated by how quickly you move across the surface...as well as how good a job you do maintaining the appropriate distance from the surface (14") and the amount of Row overlap (60%)
Pretty darn sure that has been related to you at least 3x on this Thread, and that same advice has be repeated on virtually every other Thread involving the Duster method of application.
Not trying to be a stinker here, but the quality issues you (...and a few others...) can have can all be attributed to not really following directions as are presented to you. Some wander away from "center", trying this...or that. Usually as time-saving devices. That is not very wise. Follow the advice and directions of those with a lot of actual experience...to the letter whenever possible...and the potential of success and the ability to achieve the results desired will rise accordingly.
There is no Try....only Do.