Chad.S;41542 said:
By mini do you mean golf cart size?? lol..
Are you using the valushade system then? I rarely use color matched sealers.. I use epoxy which is limited in color choices but usually I can get it to cover that pretty quickly.. White and yellows are the worse though.
Ye sir, I'm using the basis of the value shade system anyway. Value shade isn't a color matched sealer, although you can tint if youd like. I use SPI epoxy as sealer as well, I will also use the urethane sealer depending on what I'm painting. I keep all of them in stock so I can always have them on hand. value shade system only has three colors, white (VS1), medium grey(VS4) and dark grey(VS7) and you mix them to achieve the recommended value shade. If you needed a value shade 2 you mix 2 parts white:1 part grey. If you need a VS3 you mix 2 parts grey: 1 part white, you get the idea. Since the spi black is much darker than the DuPont dark grey if I need to make a VS6, ill just add a little more of the grey epoxy and just add a dab of black, at least to get it close. I have found for the most part, minus yellows that I don't need to tint anything with color. But you are absolutely right with yellow, even if I tint the white sealer with a bunch of yellow base itll still take 6 coats to full cover, its absolutely terrible and costs so much to spray yellow in terms of time and material.
heres a link to look at.
http://www.google.com/url?sa=t&rct=...T8C2taUDul3Qx7f6Q&sig2=mveOC7K6kiX1gdC2zL3wIw
old soul;41550 said:
I have NEVER had any basecoat cover in 2 coats, and very rarely on 3. Spraying PPG DBC or DuPont Chromabase.
I am also in the group that believes the sealer (or substrate) color has no effect on the final color IF you have full coverage (excepting tri-coats of course).
Not saying I am doing it right, just my technique, and no it isn't dry sprayed.
I'm not saying I'm doing it right either hah, everyones setup and technique is different. I normally am satisfied with 2 coats and have never had any matching problems when leaving it at that, when I have enough basecoat I will also go ahead and put a 3rd coat on for peace of mind depending on how my 2nd coat was laid, if I went a little heavy on the 2nd coat im not gonna go back around with a 3rd, but if I laid it kinda dry than I would. The only base I've sprayed consistently for the last 10 years has been chromabase, Ive used other basecoats here and there and depending on the color have been able to stop at 2 coats, but that's not really saying anything substantial as I can really only speak for the characteristics of chromabase.
crashtech;41555 said:
I have to disagree with this. The basecoat I am using (Standox) is known to have pretty good coverage, but there are many colors that sometimes don't quite cover in 3 coats, like some coarse bright metallics and solid reds; and some that don't quite cover with 4, like pearl reds, some really light high pearl colors, and of course bright yellow which is now chrome and lead free.
Absolutely agree with you on the yellow, its ridiculous really, its unreal how much paint you have to use for even a small item on a yellow car. I cant speak for standox, never used it. As fas as chromabase with the pearls I haven't ran into any issues yet except with this certain green a few years ago, other then that I have had decent luck. The bright coarse metallics like some of the Subaru colors I could understand being a problem but everytime I have sprayed them 3 coats was more than enough. Guess it all depends, paint is weird sometimes.
Bob Hollinshead;41571 said:
Over the years I seen a lot of bad coverage with DuPont Chromabase and Chroma Premiere compared to PPG DBC and Global, colors like Indigo Blue and some of the Green metallics oftentimes took 5 coats to reach acceptable coverage even with the correct value shade. Some of the formulas were so bad they stated to cut the basemaker back 50% for better coverage. Funny how things changed from when the system first came out though-when it was new (pre-valueshade) every color covered in 2-3 coats...then they came out with valueshade and the strengths of the tints was decreased-the reps knew it and fessed up. So now they had a required product to sell-value shade primers and sealers in order to make their watered down colors usable.
I personally don't even see why they even make chromapremier, I absolutely hate it, for the absurd amount of money it costs over chromabase, I really feel there is zero difference in the quality. I have run into 1 green where I had to put 4 coats on to get coverage, but not past that. However with any of the yellows its like a minimum of 6 coats, itll take a full quart of sprayable paint to cover a small door, its ludicrous. I am tempted to not even do anything yellow anymore cause when the customer heres the cost of the paint they freak. A normal pint of unreduced chromabase is anywhere beetwen 60-80 bucks max, once you get a yellow or one of the new high content pearls like this bronze color for these new accords, youre into the 115 dollar a pint range. Its just crazy.
