Tri coat whites
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Everytime i run into say a bumber job, the tri coat whites always come out way too light. I have been told by many people put more coats of mid on it. Well the mid isnt exactly sovling my problems…
Curious to how some of u guys tint the white tris to darken them up…. adding black tends to grey them out. yellow makes em too yellow. with the ppg system just about every white tri comes out too light. Most of them are acceptable because the opposite bumper looks the same way…
Regardless, i want to be better at matching them. any time i have the blend im fine. mixing the base and mid ect. but doing a bumper job like i said just makes me cringe everytime that bumper gets installed :headsmack:
That’s a good article. The biggest thing seems to be getting that ground coat just right. If you have time to do let down panels try using ground coats with mid coats from other formulas. That will often get you closer (more options at least). You should be fine adding a small amount of black to the ground coat. If it appears to grey, then I would think you may want to reconsider your mid coat choice.
I like to look at the formulas (and chips) for all colours. Then compare the formulas to decide if one alternates ground coat could be better matched to another mud coat. I’ve found with mixing and matching…and using the let down panel I rarely need to tint. And when I do tint, it winds up being minimal.
Are there any particular ones that are giving you trouble? I’ve found that the newer 800j vehicles are very inconsistent from factory. And often one panel on the vehicle is a little different from another.
pretty much all of them… lol whites anyways. i have read that article before. it did teach me a thing or two on blending tris. but my main issue isnt that.
Today i did a mazda bumper 25d. snowflake white. as usual it came out too light. i usually do a let down. today i was in a hurry lot of cars to get out of the paint shop ect. so i added black to the groundcoat after looking at chip and just went for it. I do want to try the paint dot method the article mentions… to tint. but in all honesty ever since i have started painting, i have had a difficult time darkening whites. i can usually get the yellow or red or blue tinting to them pretty close. its the darkness i can never bring around.
Tommorow i got a fun one as well. atleast with deltron. toyo 6s7. its a met green. picked a chip i liked and was also a mpm. noticed it had a tad to much blue sidetone to it so i left out about 10 grams of the blue shade and mixed. can always add as i need. It came out way to blue still. and i got about 10 inches from the primer to the edge of the door and no blend on quarter. i hate ppg deltron.
hopefully it will make me better at tinting tho:)
Have you had a chance to try out Envirobase at your shop? Colour matches seem to be generally a little better. Maybe when you have time you could get your supplier to give you a demo.
Back on topic…when tinting the ground coat, it usually takes a very small amount. In most cases all I’ve had to add is a little black and/or yellow. Usually less than a few grams per sprayable pint.
When I used Sikkens, I had the same problem where most tri-stage whites were too white. I know what you mean about doing bumpers, no matter how good you get it its just never good enough for you :lol
If you say when you add black it gets to grey, then you need to add more yellow or red with the black to balance it out. whites are all about the right balance of colors.
The very first thing you need to do is check the ground coat on the vehicle,there are places that have no midcoat,under hood,trunk under the rocker garnish moldings etc.Now if you need to do any tinting STICK to the formula for the tinters,just don’t grab something off the shelf and wing it,99.9% of the time the answer is in the formula for the right tinter to adjust the color.For doing a spot in or repalcing a couple of panels there a a couple things you can do to make your life easier but I will leave that for now.Always tint to blend,not for a butt match.
I used to have the same problems with 3 layer white pearls. The Honda one always too blue and the Mazda one too white. Since I got the spectro and let the computer do the shading I’m getting matches good enough for edge to edge. On whites anyway, it solved my problems.
If the color is just too white or clean an easy way to tint is to make a slurry mix. Take all of the toners in the formula except the white and make a mixture with them. The mixture should be balanced as in the formula, if it has 1g of black and 2g of yellow in the formula, your slurry mix will have the same. Add the slurry mix to the formula as needed till your color is closer.
Love 3 stage colors :woohoo: …not. Never heard of the slurry mix thing. Gonna try it sometime. Makes a lot of sense. A couple things I do on 3 stage colors. I always make a spray-out with base only and 1-4 coats of mid. Hardly ever use 1 or 4 but it helps to see which way the color is affected. The only time I don’t do a spray-out is when I already have that variant sprayed on file. Another thing in trying to match a single bumper is I try to get as close or closer as the other bumper is to the vehicle.If it is off a little I make sure it is off in the same direction (lighter,darker,bluer,etc…) and that the sidetone flop is right.The camera is also a big help to me but I don’t trust it without doing a spraycard. Sometimes but not often I have let the camera scan the entire database as a solid to choose my base. :silly: 😛
Thanks again Ryan about the slurry mix. Now for some reason I’m wanting to go 7/11 at lunch for a frozen beverage. :exci :rofl :headsmack:
[quote=”ryan999″ post=31187]If the color is just too white or clean an easy way to tint is to make a slurry mix. Take all of the toners in the formula except the white and make a mixture with them. The mixture should be balanced as in the formula, if it has 1g of black and 2g of yellow in the formula, your slurry mix will have the same. Add the slurry mix to the formula as needed till your color is closer.[/quote]
That’s pretty much the way I do it too. One thing I’d add – if working with small quantities I’ll let the “slurry” down with clear base to reduce its strength. A couple of extra drops of full strength toners could send you too far in say 100ml of white.
good catch Andy!
Thanks for the info Ryan,I did not know about slurry mix.
I do the slurry mix as well, but I add some white to it to weaken it some. Also this way you can see which way the slurry is going eg. yellow red etc. and you can exagerate the slurry one way or another which ever way you need your color to go.
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