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Masking woes

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4 replies
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  • Member since
    September 2012
Posted by GMorrison on Friday, June 19, 2020 10:51 AM

Acrylics dry from the outside in. As opposed to enamels which stay tacky longer.

Also, adding coats over paint does nothing to improve adhesion. It's all about the initial paint-to-plastic.

In fact, as maybe OMG suggests, if you clear coat over paint and adjoining tape, the clear may well form a bridge that brings some paint up along with the tape.

I generally wait a day for coats to dry, although I do like to take the tape off earlier.

 Modeling is an excuse to buy books.

 

  • Member since
    June 2020
Posted by JimLo on Friday, June 19, 2020 10:46 AM
Thanks. will definitely wait longer .
  • Member since
    November 2018
Posted by oldermodelguy on Friday, June 19, 2020 5:35 AM

I agree with Ed. Though you can quicken the process with a paint dryer ( basically a dehydrator set to 105-108f for 40 minutes or so). You can speed up flash dry times with a hair dryer too.

Additionally I wouldn't be so much worried about pulling the edge of the chrome because the paint was too thin but perhaps the clear was too thick. I'm not saying that is the case on your model but that would be my concern. You can pull the tape usually as soon as the clear tacks up well or flash dries but the base colors have to be fully dry.

On a final note I moved from model paints to Molotow pen for chrome. For side chrome on cars I also usually mask, apply the pen and in ten minutes or so pull the tape. No issues yet. I don't mask for window trim and I don't clear the trim ( yes it's fragile, I live with that fact).

  • Member since
    August 2005
  • From: Mansfield, TX
Posted by EdGrune on Thursday, June 18, 2020 8:03 PM

While Vallejo paints dry to the touch quickly, they need a full day or more to harden.    Save the masking until tomorrow, then top coat with clear

  • Member since
    June 2020
Masking woes
Posted by JimLo on Thursday, June 18, 2020 5:29 PM

I airbrushed my car trim with Vallejo Metal color chrome after masking and then about 8 minutes later sprayed a coat of Tamiya Acrylic clear over it to reduce the chances of the paint peeling. When I peeled the mask off one of the sections the chrome which was not under any tape peeled off when I peeled the tape. What did I do wrong? Should I have waited longer before spraying clear over it ?  Maybe my paint is too thin this time? not sure why?

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