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Old 02-18-2019, 07:15 PM   #1
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Default Decorative Plaster question

Hopefully PPD will chime in, but if anyone else knows, I'm all ears.

I understand the concept of an imbedded stencil using Italian plaster, but I need a little help with the details. For the stencil, do you use plaster, fresco paint....what?

Should the stencil color always be lighter, darker......????

To be effective, should there be no more than one layer of plaster on top and then the wax?
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Old 06-05-2019, 02:43 PM   #2
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I know this thread is a bit old, just seeing it for the first time, noticing it received no responses, and figured I’d share my technique although there might be better approaches.

I’ve done a few embedded stencils in both Kolcaustico and lime putty applications, the procedure for each being pretty much identical when embedding. I use the same plaster for the stencil, tinting it darker, applying the stencil after the 2nd coat in a 4 coat application. I create a master stencil utilizing mylar, then take a piece of glass and layer the glass with wide overlapping blue tape, utilizing the mylar as a template, cutting the pattern into the blue tape with exacto knives, peeling the blue tape off in one big sheet and applying it to the wall, the tape serving as the actual stencil. I use the tape because I don’t want the plaster to get underneath the stencil. I haven’t been able to come up with a method for a reusable self adhered stencil so if I have a repeating pattern I have to cut one stencil out of blue tape for each one...a very time consuming PITA! There must be an easier way..if you have one I’m all ears.

I then apply the plaster over the stencil with an inox finish trowel, let it set up, then peel off the tape. I end up with a flat layer of plaster, having transferred the artwork to the wall, the thickness of the material being the thickness of the blue tape. I take a flat hard sanding block with #320 and give the pattern an aggressive sanding to remove any height differences from where the tape might have been overlapped or any material ridges left by the trowel. I want that plaster stencil to be “flat” yet raised from the wall’s surface.

I then do another fill coat troweled onto the entire wall and over the stencil, applying more pressure over the stenciled area to create a burnished/photographing effect. I’ll then apply a thin burnish coat over the entire wall, always pressing heavier over the embedded stencil to further enhance the photographing of the high points through the finish, sort of like when you’re plastering and hit a speed bump like a nail pop or tape joint, those high spots telegraphing through the finish and reading darker....I hate it when that happens..

Anyway, that’s my self-taught technique for embedding stencils..I don’t know how others might do it or if this is of any help to the OP.

Last edited by Alchemy Redux; 06-05-2019 at 05:09 PM..
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