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Using Plasti-Dip for masking?

aka Larry

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I have a project coming up in which I want to paint a plastic engine cover in a two tone scheme. The cover itself would be one color and the raised lettering the other. I've done this in the past and it came out great, but I was able to purchase pre-cut vinyl decals to mask the raised lettering. This new cover is less popular, so nobody seems to be making the decals I could use for masking.

I've been kicking around a few ideas. Option one being covering the letters with masking tape and trimming it to fit in place via an X-acto knife, but this seems beyond tedious, and not nearly as precise as I'd like it. Option two is a variation of option one where I'd cover the letters with the masking tape, do a "rubbing" to get the outline of the letters, remove the tape, trim the tape with the X-acto knife, and re-apply the tape to letters. Like option one, option two would be tedious, and probably not precise enough to suit me.

So to the point of this thread, I started wondering if using Plasti-Dip as masking would work? I've used it to coat the raised emblems on my Charger where it worked perfectly and was easy to do. Here's what the game plan would be:

1. Spray paint the raised lettering with the first color.
2. Mask off an area around the lettering, and apply the Plasti-Dip over the letters.
3. Remove the surrounding Plasti-Dip (like on the car emblems) leaving the letters covered (masked).
4. Spray the second color to the rest of the part.
5. Remove the Plasti-Dip that was being used as a mask revealing the color underneath on the lettering.

I've tried to research someone else doing this, but I only found one example who said the Plasti-Dip was all but impossible to remove from the lettering. I know it's much easier to remove the thicker it is applied, which I can absolutely do. I once Plasti-Dipped a wheel with like 10 coats, decided I didn't like it, and was able to peel it right off almost in one big sheet.

Anyone think this would work? I know I could just go for it, but with cost of the cover, hardware, paint etc, I don't want a failed 'experiment' on this part.

Thoughts? Suggestions?
 
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Old tool guy

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Never used it, but if it’s sold on amazon it must be good.
 

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niget2002

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Why not just buy liquid masking tape which is made for this?


Alternatively, you could paint the main part of the cover first, then mask around the lettering and paint the lettering second.
 

Paycheck

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For dip to peel properly you have to use a lot of coats. I don’t think it would play well with paint. You could check with the folks at DYC.
 
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A

aka Larry

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Why not just buy liquid masking tape which is made for this?

I looked at that stuff. To make it work, I'd have to spray it on, and trim each letter with the X-acto knife, which is just as tedious as using masking tape.

They actually make a brush-on type for small parts, but again seems very tedious. Maybe I'm just a lazy *******?...LOL.
 
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niget2002

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I looked at that stuff. To make it work, I'd have to spray it on, and trim each letter with the X-acto knife, which is just as tedious as using masking tape.

They actually make a bus-on type for small parts, but again seems very tedious. Maybe I'm just a lazy *******?...LOL.
How is brushing this stuff on any more difficult than brushing plasti-dip on?
 
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ArcReactorKC

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I have not had good luck using plastidip as a mask

I have fully dipped multiple vehicles and am not a plastidip novice by any means.
The issue I always have is that the dip does not create a sharp edge and when peeled you find a jagged edge where paint has been allowed under the edges of the dip.

I have used vaseline as liquid masking tape however with success for both regular automotive paints and for DYC plasti dip.
 
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aka Larry

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The issue I always have is that the dip does not create a sharp edge and when peeled you find a jagged edge where paint has been allowed under the edges of the dip.

This is what I've been told today, by a friend as well.

I have used vaseline as liquid masking tape however with success for both regular automotive paints and for DYC plasti dip.

I have heard of this method also when painting other items (like a valve cover) with raised letters. I'm sure it will work paint-wise, but so you think I would be precise enough with the application of the Vaseline?

I have one more idea to throw out there that is used by plastic scale model builders. They use Silly Putty or another type of putty called 'blue-Tack' or 'poster tack'. You either mask the letters with it like tape or do it in reverse by painting the cover first then molding the putty around the outside of the letters and tape off the larger areas. The putty is easily removed after the paint is dry, and the paint and it doesn't adhere to the putty.
 

mike93lx

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Maybe have the decal custom cut by someone on Etsy? If you can get it in a file, it could be an easy task for anyone with a vinyl cutter, like a cricut
 

36truck

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Do you have a sign shop that makes vinyl lettering. Have them make the letters. Even if you bring in the part and have them copy it.
 
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