density of undercoat paint is greater than density of finishcoat paint ?
2007-03-23 15:47:42 · 7 answers · asked by skyun 1 in Arts & Humanities ➔ Visual Arts ➔ Painting
paint has a makeup of sealer in it where as a finish coat is made for looks
2007-03-23 15:51:19 · answer #1 · answered by ninekittys 3 · 0⤊ 0⤋
Depends on what your painting. There's aerospace, industrial( millage painting), commercial ( houses, concrete, buildings etc), and automotive. There is also coal tar epoxy, epoxy, 2 pt epoxy, latex, alkyd, enamel, zinc, single stage, and many more.
A primer ( which I believe is what your asking about, used in auto and aerospace, is generally thinner than any intermidiate or finish coat of paint. Finish coats in these uses are thinned to a water like dilution to get them to lay out and smooth as they dry, and with automotive, the more coats the better and smoother it will look. This goes for the clear coats as well.
With industrial, esp with Swatco and Haliburton parts, the zinc should be 4 mills, with the intermidiate coat being 3 and the topcoat is the same thickness, but not to exceed a total of 11 mills. In this case, it is more like a heavy duty rust preventative system.
Commercial painting, due to the amount of different substraits that are recieving coatings of all types, is hard to get into here, but more primer the better.
This is a general rundown, and hope it helps.
2007-03-23 23:10:24 · answer #2 · answered by pyledriver 3 · 1⤊ 0⤋
No...your undercoat is like a primer so your finish coat should be greater. Never worry about the first coat, that is unless you are using an expensive one coat coverage paint. Then it will cover in one coat as long as the original color is similar in color to the new paint.
2007-03-23 22:59:15 · answer #3 · answered by DaDiva 4 · 0⤊ 0⤋
Yes, in theory. Fat over lean. Lean is the undercoat and is called lean because it has less oil or medium. (Fat has more oil or medium so the paint is thinner and more transparent.) In the undercoat the paint is less diluted with the medium (so more opaque) and subsequent coats are "glazed on" thinly to achieve depth and glasslike layerings of paint. It's nice to do highlights with a glop of light colored paint.
2007-03-24 01:08:44 · answer #4 · answered by ckswife 6 · 1⤊ 0⤋
Jacket of ink? Parka of watercolors? For gods sake, if you're cold wear something!!!!
2007-03-23 22:56:30 · answer #5 · answered by Izen G 5 · 0⤊ 0⤋
what is the question?
2007-03-23 22:50:31 · answer #6 · answered by Anonymous · 0⤊ 0⤋
im confued...
2007-03-23 22:54:49 · answer #7 · answered by Q 3 · 0⤊ 0⤋