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Paint Seepage

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  • Member since
    May, 2018
Paint Seepage
Posted by Coastie on Saturday, May 05, 2018 1:15 PM

I am not very good at taping a model.  My top problems are seepage under the tape and the gum from the tape sticking to the paint from the border color.  Any thoughts on how to manage these problems? Other than a complete do over?

  • Member since
    March, 2010
  • From: Midwest
Posted by High octane on Saturday, May 05, 2018 2:18 PM

Yes as it seems like you're not letting the paint dry/cure enough before you tape it, and as far as the seeping goes, yoou must put your tape down well AND before spraying your second color you MUST spray some clear paint along the tape edge so if it does seep through along the edges, what color would it be? You're right, clear. Wait 'bout 15 - 20 minutes and then spray your second color coat and you should have no problems. Remove the tape not too long after you're done painting.

High octane

  • Member since
    May, 2018
Posted by Coastie on Saturday, May 05, 2018 2:41 PM

Thanks a lot. I've never heard of the clear paint coat before the second coat.  Gonna try it on my Team McLaren Mercedes MP4-20 to clean up the first color.

  • Member since
    May, 2015
Posted by Goofy62 on Saturday, May 05, 2018 4:43 PM

The first step is to use good tape.

This is not one of those areas to go cheap.

Get some good tape like Tamiya & it will eliminate most of your problems.

Cheap standard masking tape can lead to all sorts of issues including seepage, leaving behind residue, scarring the underlying paint & even tearing off the underlying paint when you remove it.

As far as I'm concerned, using standard masking tape for almost anything model related is a recipe for disaster.

I never let masking tape touch my model's surfaces anymore.

Way too many problems.

Blue painters tape will eliminate some of these issues, but it does not adhere well enough to be usable for paint lines.

I use nothing but Tamiya tape & BMF for masking my paint color seperations.

 

Steve

  • Member since
    March, 2010
  • From: Midwest
Posted by High octane on Saturday, May 05, 2018 7:53 PM

I've beeb using the standard making tape for many years and have not encountered any problems. I also use the blue painters tape and on a rare occasion I'll use the Tamiya yellow tape. It seems to work for me.

High octane

  • Member since
    January, 2004
  • From: Australia
Posted by warra48 on Saturday, May 05, 2018 11:26 PM
Been using Tamiya tape for the last 25 years, with never a problem. My current roll is several years old, so it's not like I'm blowing huge loads of cash on tape. And if I want a really crisp edge, I place the tape on a piece of glass, and cut an edge with my scalpel along a steel ruler. Tamiya tape cut into thin strips will also conform nicely to contours and bends. I also never use non-model related tape anywhere near my models. Allowing any underlying colours to cure and harden properly before taping it off for subsequent colours is also a must. If you tape it off too early, any tape will leave some ghosting on your prior coat.
  • Member since
    May, 2008
Posted by TerryB on Sunday, May 06, 2018 8:42 PM

you didnt mention what paint you are using but i will tell you what i do.

I use dupli-color perfect mactch automtive spray paint and when i want to do a two tone i paint the lightest color first, let it dry then tape off the area, after that i put a light coat of the light color again, that way if it seeps it wont show and it "seals" the tape, after that dries i paint the darker color, let it dry untape it and clear the whole car. it works with the paint i use becuase it dries really quick (laquer)it might be tough with some paints depending on how long they take to dry. If i knew how to put pictures in here i would show a few idid that way!

 

 

  • Member since
    May, 2015
Posted by Goofy62 on Sunday, May 06, 2018 11:55 PM

High octane

I've beeb using the standard making tape for many years and have not encountered any problems. I also use the blue painters tape and on a rare occasion I'll use the Tamiya yellow tape. It seems to work for me.

 

I was a drywall subcontractor/painter for 25 years and have used probably thousands of rolls of standard and painters tape over that period.

Part of the problem with standard tape is that it's a poor moisture barrier especially with solvent based paints.

Moisture and solvents can soak through the tape to the adhesive causing the adhesive to separate and create a gluey mess.

I'll bet I've seen 100 complaints on various forums about tape adhesive sticking to the painted surface so badly that either the tape cannot be removed, or the adhesive is left on the model.

It can be nearly impossible to remove.

I've personally had this happen as well as the tape sticking so badly that it actually rips strips of paint off of the model down to the primer.

The solvent can also soak through to the adhesive causing it to become contaminated by the solvent and damaging the underlying paint.

Masking too soon can cause damage to the underlying paint, but so can solvent getting through the tape.

I will not tell people that they cannot use these tapes, but I always reccomend that to be certain that these problems will not arise, to use other masking materials.

Tamiya tape is not that expensive, especially when it can save you the hassle and expense of stripping & repainting.

There are also comparable automotive type masking tapes available at many automotive parts and paint stores that will work much better than your garden variety Home Depot type masking tape.

I suggest that people save those for what they were intended.

Masking off baseboards and trim when using latex house paint.

 

Steve

  • Member since
    September, 2017
Posted by Big Gary on Monday, May 07, 2018 10:49 PM

I've been using the blue tape with great success for 10 years. 

  • Member since
    March, 2010
  • From: Midwest
Posted by High octane on Monday, May 07, 2018 10:58 PM

I'll be using it tomorrow as I have some painting to do, and the blue tape will suit my needs.

High octane

  • Member since
    May, 2015
Posted by Goofy62 on Tuesday, May 08, 2018 1:10 AM

Big Gary

I've been using the blue tape with great success for 10 years. 

 

Blue painters tape will generally not create the same sorts of adhesive problems that can arise with standard masking tape.

The main problem with painters tape is it's low adhesion properties.

That was the entire point of it's development.

So it is more easily removed.

As I said, people are more than welcome to use whatever they prefer, but I would absolutely not recommend blue painters tape to someone who is already having seepage issues.

Just my observation from my many years of experience.

 

Steve

  • Member since
    May, 2017
Posted by Bugman9317 on Tuesday, May 08, 2018 6:03 AM

Like everyone else suggested, use good tape. Tamiya is my go to tape, but if it is something I am really worried about having a perfect line I will use BFF. I know some people would say why waste the money using it, but I would rather spend the $1 on BMF compared to redoing a paint job.

  • Member since
    May, 2015
Posted by Goofy62 on Tuesday, May 08, 2018 11:53 AM

Bugman9317

Like everyone else suggested, use good tape. Tamiya is my go to tape, but if it is something I am really worried about having a perfect line I will use BFF. I know some people would say why waste the money using it, but I would rather spend the $1 on BMF compared to redoing a paint job.

 

Exactly.

 

 

Steve

  • Member since
    June, 2018
Posted by Makayla owley on Thursday, June 14, 2018 3:47 PM

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  • Member since
    August, 2005
  • From: Nashua, New Hampshire
Posted by mrmike on Thursday, June 14, 2018 7:54 PM

More spam again.  I've reported this!  

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