Technical Painting multiple colors...Taping etc.

Very soon I'm going to be painting the body and assorted pieces of my 26 RPU project.

I'm going to be painting the firewall Wimbledon white and the rest of the body Washington blue.

In looking at the manufacturers info on the BASF RM Uno single stage acrylic urethane I can see where they say a minimum of 24 hours of drying time between coats.

What I'm also wondering is how long would I (or should I) wait before being able to safely and comfortably apply tape to a newly painted surface without causing problems.

For instance painting the firewall first with Wimbledon white, after which you have to mask it off and cover it up in order to spray the blue.

The next thing I'm wondering about is what to use for the cover up.
I've seen paper or light poly used.
Any tips or info based on experience doing what I'm looking to do?

Larry

 

24 hours of drying time between coats

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Thanks for the help

 

Something is wrong with the 24 hrs between coats. They must mean if you miss the flash time you have to wait 24hrs to recoat. Should be something like 10-15 minutes flash time between coats.

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Overnight is plenty for any paint with a hardener in it to sit before masking, as long as you can't leave a finger print in it you should be fine, I prefer masking paper for smaller areas and plastic for bigger areas, either way make sure it is for that purpose, dried paint will flake off regular poly and ruin your day. No matter which you use make sure it is sealed up!!! Overspray will find its way into any little hole


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3 days for 3 coats??? Better check that again!

 

Thanks, that's what I thought. I'll double check with Carlson too.

 

Thanks I'm going to get whatever they sell for the purpose at the body shop supply.

I just want to be sure not to mess up what I have already done when I get to that stage.

 

That's the best stage!


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I think this is your stuff -
5 min flash time between coats
20 min flash time for next step/product/clear
24 before sanding or recoating over final coat

 

And here I thought that I was good at understanding what I was reading

Took another look at it and the paint info paper says 24 hours drying time after the final coat.

The 24 hours applies to a recoat if you want to do so.

 

Don't use cheap tape, hardware store tape, or news paper.
Newspaper especially if your doing white, the ink flies off and land in the paint

 

Speaking of tape, what is best? I'm familiar with the blue painters tape that definitely isn't cheap.

Something better than that?
Brand name?
Also going to check on that at the body shop supply.

 

What ever Carlson's sells you for tape will be fine. It will probably be American Tape as they are a big supporter of that line. You should be able to buy a 18" roll of masking paper from them as well which will be plenty for what you are doing.

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3m yellow is the best i have used. be careful of plastic on fresh paint, it can hold the solvents that are coming out of the paint against the surface and "kill " it.
proper auto body paper is dust free and won't let solvents through so they can't get to what is under them. i also use the plastic sheets made for painting. they have one side that can be painted and not let dried paint flake off.

 

a couple examples: from this thread:
https://www.jalopyjournal.com/forum...nt-that-fixtures-and-taping-technics.1008403/

 

The blue tape sold at every hardware store is "hardware store tape"
The stuff that's kind of a light Manila tone paperish feel is the cheap tape.

3m yellow is what I use. I like it a lot. It's sticks good and releases even better.

 

Another question to sneak in here.
I'm going to paint my transmission and it has a raw Aluminum bell housing (adapter) cast by Flat O as a Y Block to C4 adapter.

Will I need to do anything special before painting it along with the transmission?
Larry

 

Yes, aluminum needs a cleaner, and primer suited for aluminum. Then it's business as usual.

 

What kind of cleaner and primer?
Keep in mind that the cast aluminum is as cast with a rough surface as typical of cast aluminum.

 

Needs to be thoroughly degreased and painted with an etching primer before color.

 

Thanks.
Since I only have that small bell housing to paint maybe I'll pick up a spray can of 2K etching primer from the body shop supply.

 

Don't use that blue tape. I found out the hard way. I painted a truck tu-tone and when I removed the "blue tape" between the 2 colors, the tape peeled a little bit of paint off. Makes one wonder though about all those old painters who used that beige masking tape and newspaper. Anyways. don't forget to wait 24 hours between coats

 

Hey if you're looking for some tips painting etc....checkout The Gunman on YouTube, he's a fellow Aussie and has some great info for us home painters


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Well, I ain't no Pro, but I've used the blue tape and the tan tape for years without any problems. I also use newspaper paper--before it's printed on. Wife goes by the paper office every once in a while and picks up a few roll ends, the end of the roll that they change out when they are printing and don't want to run out before they are through with the job. Have also used printed paper before, never seen any ink fly off of it, might have, don't know.

Not saying my way is any better or worse, just what has worked for me.

 

I I don't know if this is still true but quite a few years ago I helped a pretty damn good painter do a two tone job and he used scotch tape for the break line, said it left a cleaner edge, less raged ( ragged?)

 

X2 -Well worth the time watching the gunman.

 

Since my sister gave me a gift card for Canadian Tire I just went and got some 3M auto performance masking tape.
Looks like good stuff