DIY Granddad (w/help)
Join Date: Nov 2002
Location: Byhalia, Mississippi. Waaaay down in the Bottoms
Mentioned: 85 Post(s)
Tagged: 5 Thread(s)
Quoted: 1901 Post(s)
If the look is one of even coverage it's extremely doubtful you'd see any difference.
Finish sanding is exactly that. The use of a broad fine grit Sanding surface (9" x 3" x 1" sponge preferably) and sanding by using very broad, sweeping strokes....about 6 (3 up/3 down) strokes per area. You do the six strokes very lightly...just a kiss of pressure, then move slightly to one side and repeat...so on & so on across the entire screen width. On a screen your size, I would concentrate on going across from left to right (..or vice versa) and doing the top 5/8ths of the screen, go all the way across. Then go back the other direction doing the Bottom up to just past the point your first row's bottom sweeps stopped.
Then I do a very light 3 strokes per vertical row across the center. With so little texture present, your not trying to remove much material, just smooth the surface further by gently knocking down only the highest points of the tiny bumps. You don;'t want to scrub sand at all as that will create darker spots where you really reduced the bumps, and therein require thicker Dusters.
Then, you dust off the screen and apply very quick dusters, with 70% overlap. 2...perhaps 3 at most. Try to have 4-5 oz. of the Mix left for any potential need for spot repairs.
Honestly, the finish sanding is something I always do....because I love a silky, almost glass-like finish. Of course I do em all the time and what i find as being "out of hand" easy and normal, others might find to be drudgery. The single most biggest advantage of a soothest coat...besides no visiable texture, is that when the paint fully cures out, the surface is much less prone to collecting dust and dirt, and resists pressed on grime and stains. The smoother, harder surface also allows for the use of a slightly damp cotton cloth to very gently wipe away inadvertent marks or slightly sticky debris such as Fly poop. (...a very real issue at times...)
But for goodness sake, do NOT EVER swat or smoosh a Fly. Mosquito, or any juicy Bug. Protein such as bug goo or blood is the most difficult material to clean off, but if it does happen, an immediate light soaking and a gentle "wipe away" with the dampened cloth is going to have a better chance of working on a smoother screen surface.
When I paint, and with intuitively knowing just how much paint to / can be Dusted per goat depending upon my mix's condition, I usually have no more than 7 coats.....5 before sanding, and 2 finish Dusters. Those with less / no experience, absolutely it's better that their Dusters go on even thinner....that's the whole idea behind Dusters. So 8 or 10 coats would be / is not uncalled for.