Need some advice on how to lay out multi color job.

S

sbronco68

Hi Everyone,
I could really use some advice, I have painted a few solid color BC/CC cars in the past but about to paint a airplane and want to use multiple colors. I have a few questions if anyone can help.

What color gets painted first? The airplane with be Corvette Blade Silver on the top half, Corvette Cyber Grey on the bottom half with a Ferrari Red strip down the middle separating the colors. So what color (s) can I lay on top of each other? I would guess the red can go on top of the silver but not the grey? These base coat colors will be Deltron DBI 2000 on top of SPI epoxy primer. Can I spray the silver and grey right up to each other then tape off the red stripe and spray the red? Or will the red look wrong on top of two different colors?

How long do I need to wait to put tape on the BC? Deltrons page 30min but I read on here overnight? Can I tape right on the BC, or do I need the Intercoat stuff?

How long do I really need to wait to spray the SPI clear? Again Deltron says 30min but I read on here overnight.

Any advice would greatly be appreciated, I will have nearly $4,000 of liquid in this project and don't want to screw it up. The attached picture is more or less what Im trying to do.

Thanks
Shawn
 

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I'd spray the silver first and then tape off to the bottom of the red. Mask the silver only taping off the bottom line where the red borders the silver. Spray your red, then tape off the top line of the red (and mask) and spray the black. That way you only have one tape line on everything and it should be a little easier to bury the lines in clear or at the very least not as noticeable. Spray an extra coat of black just to make sure the red overspray doesn't alter the black any.
Yes, you can tape on the base. Pretty much gonna have to unless you want to spray the silver, then intercoat it, then tape off, then spray the red, then intercoat it and tape that off. Using intercoat will double the amount of time it will take to spray it. If you are careful and you don't get your hands all over it you can tape the base. You can tape over in 30 minutes but it would be better to give it longer, especially as some of the tapig will have to be on the base for an extended time. A better minimum would be 2 hours @72 degrees or greater for each step. After you get it in base make sure you give it another 12 hours or so before you clear. Don't worry if you go over the 24 hours max recoat time that PPG states. Doing so won't affect adhesion even if you activate it.
 
Chris_Hamilton said:
I'd spray the silver first and then tape off to the bottom of the red. Mask the silver only taping off the bottom line where the red borders the silver. Spray your red, then tape off the top line of the red (and mask) and spray the black. That way you only have one tape line on everything and it should be a little easier to bury the lines in clear or at the very least not as noticeable. Spray an extra coat of black just to make sure the red overspray doesn't alter the black any.
Yes, you can tape on the base. Pretty much gonna have to unless you want to spray the silver, then intercoat it, then tape off, then spray the red, then intercoat it and tape that off. Using intercoat will double the amount of time it will take to spray it. If you are careful and you don't get your hands all over it you can tape the base. You can tape over in 30 minutes but it would be better to give it longer, especially as some of the tapig will have to be on the base for an extended time. A better minimum would be 2 hours @72 degrees or greater for each step. After you get it in base make sure you give it another 12 hours or so before you clear. Don't worry if you go over the 24 hours max recoat time that PPG states. Doing so won't affect adhesion even if you activate it.
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Chris thank you so much! That is a fantastic idea and should work perfect, not sure why I never though of that. I did just order some Intercoat from SPI but it looks like I might not need it. If I were gong to use Intercoat what would be be the required dry times between Base (silver), Intercoat, Tape, Base (red), Intercoat, Tape, Dark grey, Clear? Yea that's a process for sure!

Thanks Again for the advice
 
Dry times would be something like this; spray your base giving it ideally 30 minutes between coats . After your final coat of base wait 30 minutes (ideally) then spray a single medium wet coat of intercoat. Wait the 2 hours, then start on your next color, tape, mask, then spray. Do that for each color. You can see how much longer it will take that way. Plus you are building millage. Jim C might be a better one to comment on this process as I would never Intercoat on simple taping like this. It would just take too long. Intercoat is good for taping out flames, intricate designs etc over a base. When you have multiple colors and relatively simple tapeoffs it isn't 100% necessary.
Hopefully Crash, Jim or Shine (anyone I left out no offense intended:)) will weigh in on this and give you their opinion.
 
Chris thank you again for taking the time to help me. I would Love to skip the intercoat if I can but I also know I will never get the tape right the 1st 2nd or maybe 3rd time so at that point maybe I will really be risking screwing up the base coat.

Again thank you Chris and I welcome anyones opinion or comments and suggestions.

Thanks
Shawn
 
if i was doing that i would be spraying the red first then mask it away. anytime i have a job the has the graphic stripe dividing 2 colors i always spray the graphic first. it cuts alot of the masking steps out and keeps the paint edges as thin as possible. basically you only have one detailed masking job to do then you can just drape some plastic one way, spray color 1 then drape some plastic the other way and shoot color2.
as for masking time it really depends. are you shooting a sealer down? how fresh will the epoxy be before you put your base down? if you use epoxy as a wet on wet sealer then your not going to be able to mask on the base until probably the next day. with that said you should avoid putting base on epoxy that is more than 24-36hrs old. you can get 48 hrs this time of year. you dont need intercoat to mask on your base if you wait until the base hardens up. assuming you have a cured and hard primer then base should sit maybe 1-4 hrs depending on the amount of coats, temp and airflow.
 
Jim C said:
if i was doing that i would be spraying the red first then mask it away. anytime i have a job the has the graphic stripe dividing 2 colors i always spray the graphic first. it cuts alot of the masking steps out and keeps the paint edges as thin as possible. basically you only have one detailed masking job to do then you can just drape some plastic one way, spray color 1 then drape some plastic the other way and shoot color2.
as for masking time it really depends. are you shooting a sealer down? how fresh will the epoxy be before you put your base down? if you use epoxy as a wet on wet sealer then your not going to be able to mask on the base until probably the next day. with that said you should avoid putting base on epoxy that is more than 24-36hrs old. you can get 48 hrs this time of year. you dont need intercoat to mask on your base if you wait until the base hardens up. assuming you have a cured and hard primer then base should sit maybe 1-4 hrs depending on the amount of coats, temp and airflow.
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Jim Thank You very much for your response.

I like your idea for keeping it simple but will I have any problems with putting silver base on top of a bright red base? Again completely new to multi color. Being a plane weight is super critical so my plane was to shoot SPI epoxy on the bare aluminum wait overnight and the next day do a light DA sand and then shoot the base. Open to all suggestions on proper way to do this. This project will be done in parts for sure and there is no big rush. This airplane build started over 10 years ago so spending a few extra weeks to get the paint right is no big deal.

Thanks Again
Shawn
 
shawn, overnight wait on the epoxy is just fine. silver will cover over the red no problem. silver generally covers fantastic. the finer it is the better it covers. its aluminum powder so its not transparent.
 
Jim C said:
shawn, overnight wait on the epoxy is just fine. silver will cover over the red no problem. silver generally covers fantastic. the finer it is the better it covers. its aluminum powder so its not transparent.
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Fantastic, Thanks so much. Looks like I can go your way or Chris's with great results. Now to see if I can lay out some tape.

Chris and Jim, Thanks Again for the help.

Shawn
 
Hi Guys,
Well got to spray base yesterday and today and things are going great! Thanks so much for the advice. So one issue I ran into and need some more advice. When I pulled the tape off the red it left a dab of tape residue here and there. What is the best way to remove the residue before I spray clear tomorrow?

Also I have a bit of a raised and maybe slightly rough line between the colors. Should I just spray clear and move on or can I lightly sand this? I have never sanded base before. Can you do it without putting down more base?

Thanks Again Guys for the help.
 
Mineral spirits for the tape residue. Dont buy paint thinner. Just pure mineral spirits. You cant sand the base and not spray more.
 
Thanks Jim! MS worked great. Well time to go shoot some SPI clear! I'm so nervous though, been reading and watching videos for nearly a year now and it all comes down to the next few hours....... I will post pics (good or bad) later. Thanks again guys.
 
OK GUYS QUICK!!!! 2 or 3 coats? Weight is an issue so can I do 2 or should I really do 3?

First coat went down like glass. No big OP and no runs.
 
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