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Topic: Achieving a Matte Finish / Simulating Old and Dusty?  (Read 769 times)
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RKEM
« on: August 13, 2012 12:40:08 PM »

I've been running into the same problem over and over with polymer or multimedia pieces (usually polymer clay with sometimes paper maché additions and usually painted with run of the mill paints (delta creative craft paints). Even though I use a "matte" finish, the piece ends up glossy. Right now I use delta creative varnish - matte ... and the results are well, frustrating.

Is there something I can rub on the piece (or mix with the paint) as it dries to make it non-glossy (or better yet look old and dusty) or something else I can use instead?

Thanks Smiley
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Antidigger
« Reply #1 on: August 13, 2012 02:13:59 PM »

Perhaps you could try varnishing it and then, whilst the varnish is still tacky, puff talcum powder at it. If you're looking for that cleaned after getting filthy look, wipe it down with a solvent afterwards so you'll only have dust in the crevices.
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Diane B.
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GlassAttic --polymer clay "encyclopedia"


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« Reply #2 on: August 14, 2012 08:28:13 AM »

You might also want to check out a few pages at my site for info about doing both those things in various ways:
http://glassattic.com/polymer/finishes.htm
(click on > Varathane >> General Info, then scroll down to paragraph called "Making Gloss Varathane NOT-Shiny" though should work for most any clear water-based finish too)

Here's some of what's suggested there:
(Going over a piece with matte glaze can look cloudy and thick.)
Some light abrasives that can be used to take down glossiness are:
...very high grit wet-dry sandpaper (1200 or higher)
...light pumice powder (hardware store)
...0000 steel wool
...sanding sponges
Or before baking, other fine abrasives can be used like cornstarch, Bon Ami or on very fine sandpaper, and more.  And one person recommends "finger-polishing raw clay with water, then using no varnish at all after baking." 
Another idea is just to "texture" the raw clay with a very-fine material of some kind (high-grit sandpaper?, pouncing repeatedly with an emery board or fabric, etc); those things will physically and visually break up the smoothness of the surface so it can't look shiny.

After any of those (after baking), can then be lightly buffed by hand if you want a less dusty-lightish look (...and don't reheat the clay since that can partly melt the surface clay back to a smoother appearance).  Or leave as is.

If the item is highly dimensional, that could leave a more glossy look in the lower areas after dulling the upper areas (if not using a fine tool or toothbrush/etc. to get down into those areas), so if necessary you could later "antique" those areas with a matte acrylic paint (artists' tube paints work best) like dark brown, or even mix a bit of very fine powdery material (even dirt) into it to make those areas grubbier looking**.  Other colorants can be used down in the crevices instead too.
If you don't know about "antiquing," check out at least this page at my site:
http://glassattic.com/polymer/molds.htm
(click on Antiquing, Highlighting, Staining)
("Backfilling" on the Carving page would be another possibility, but perhaps more stuff in the lower areas than you'd want.)

If you really want to make something look old-old in particular, also check out this page:
http://glassattic.com/polymer/Faux--many.htm
....click on Ancient and Aged Looks
That page also has lots of other materials that can easily be simulated with polymer clay so if the material/item you're making is one of those, you might get more tips from those categories as well.  (There are a few other materials with their own pages too, like faux wood, faux ivory, and faux turquoise.)

** "inclusions" of all kinds can be mixed into polymer clay, or into liquids like paints, clear finishes, etc (e.g., dirt, ground spices and herbs, and more):
http://glassattic.com/polymer/inclusions.htm


« Last Edit: August 14, 2012 08:35:16 AM by Diane B. » THIS ROCKS   Logged

POLYMER CLAY "ENCYCLOPEDIA" 
http://glassattic.com/polymer/contents.htm
few of my photos
http://s96.photobucket.com/albums/l163/DianeBB
(had to move them from YahooPhotos, so many now without captions)
RKEM
« Reply #3 on: August 23, 2012 09:18:13 AM »

Holy information avalanche batman!

Thank you. I have read through a lot of the information and I'm going to try a few of them to see if I can get the finish I need. But definitely it seems that not shaking the bottle of varnish may have been part of the problem for a lot of the gloss.
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