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Topic: Mica shift  (Read 10890 times)
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teapotdnky
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« on: June 23, 2006 03:26:01 PM »

Okay, follow the first two steps here: http://www.craftster.org/forum/index.php?topic=102822.0

3. Roll your sheet of clay onto a texture sheet. I use water to keep it from sticking to the roller or the texture plate.


4. Make sure the texture is really on there good.


5. Carefully "shave" off the top layer of clay. This will take the texture off your clay, but this is what you want.


6. Your image looks 3D but its really flat.


Use this for everything!!!!
« Last Edit: August 28, 2007 07:43:11 PM by the craftster admin (leah) » THIS ROCKS   Logged

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DharmaLei
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« Reply #1 on: June 25, 2006 10:44:03 AM »

This is so cool.  TFS!
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Diane B.
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« Reply #2 on: June 25, 2006 02:33:59 PM »

Nice, teapot! 

Everyone else.... be sure to notice that the gold clay in the last photo is
COMPLETELY FLAT... the apparent depth of the pattern is an optical illusion.
IOW there are not two colors of clay creating the pattern, and there are no depressed areas at all. You almost have to run your fingers over these perfectly smooth "ghost image" mica patterns to be aware of how amazing the effect is.

At my site I sort the effects that can be achieved with mica-containing clays (gold, silver, pearl, or colored ones) into several categories: 
...Teapot's first tutorial would be under the basics, or maybe Other Techniques
...Teapot's technique shown in this thread is called ghost image mica, which she's done here with a shaving technique (or one can sand the clay flat after baking to do the same thing). The ghost image effects work best with stamps or textures that are deep, or tool marks that are deep.
...twisted ropes, stacks/"ingots," other 3-D and flat effects by Mike Buesseler
...caning techniques and cane slice onlays by Pier Voulkos & others


What's actually happening, for those interested, is that some polymer clays (metallics and Pearl in the lines of Premo, Kato, and perhaps still FimoSoft --but not metallics of FimoClassic and not Sculpey III), contain many small flat flakes of mica (which come from wide clear mica sheets/flakes on the surface of a certain type of rock). 

When the clay is flattened very well (in various ways), all the flakes line up parallel to the surface of the clay sheet, and reflect light nicely so that the gold (or any color of clay they're in) looks very shiny.
Then, any flakes which are pressed on will be disturbed and no longer parallel to the surface ...therefore they can't reflect the light as well and will appear darker and more dull than shiny.

....So what you're seeing in a "mica shift" item is a pattern created by the differences between the areas of dull gold and shiny gold (since she used gold colored clay).


P.S. The clay color called Pearl is a fairly colorless (slightly whitish) mica-containing clay, which can also be given color by mixing in regular colored clays. or other things.

Here are four pages that show Pearl mixed with various colors, which have also been give a mica shift technique (different than the technique above... this technique is created with mica cane slices placed on a clay sheet and rolled flat):
http://www.clayfactoryinc.com/images/gallery/pier/PIER1.htm
The gold, copper, etc. mica clays can also be colored but of course they'll be darker...here are a few:
http://www.norajean.biz/ColorCards/Samples/Card-Grp.htm (beginning with photo # 4)
(entire palettes of color can be created with mica clays which can then create these hologaphic effects)


There's lots more info on all the mica techniques on this page, for anyone who wants to see more examples, tips, etc.
http://www.glassattic.com/polymer/mica.htm





Diane B.
GlassAttic....polymer clay "encyclopedia"
http://glassattic.com/polymer/contents.htm
little bit'o photosharing: http://pg.photos.yahoo.com/ph/dianeatglassattic/my_photos
« Last Edit: June 26, 2006 10:12:12 AM by Diane B. » THIS ROCKS   Logged

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« Reply #3 on: June 25, 2006 02:50:43 PM »

Unbelievable! I never would have thought it was flat.
Thanks for showing us, teapotdnky and Diane B.
Gr,
BeaG
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Diane B.
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« Reply #4 on: June 26, 2006 10:34:22 AM »

I know what you mean.  Actually, it's practically impossible to resist the urge to feel the surface of the baking clay every single time you see a ghost image mica effect (even when you've made it yourself!...lol).   Mica clays are really fun to play with!

And btw, you can play with them without a pasta machine and still do most any of the mica effects... just takes a little longer.   

So there are several ways you could orient all the mica particles without a pm (which is the first step for most of the mica clay techniques): 

1. FLATTEN the clay with a roller (...even a jar, can or straight-sided drinking glass --roller needs to be smooth though)
.....roll the clay really thin... cut the sheet into several pieces and stack them on top of each other till you get the thickness you want (press out any trapped air)
.....OR, roll the clay out thicker... cut in half and stack one half on the other...then roll that out ... (repeat a few times)
(this is also the way to create "ingots," or larger blocks of clay that have the shiny all going one way and the dull the other way... to be able make canes and other things)


2. PULL the clay
...roll the clay into long log
... cut into lengths.... stack lengths together
... pull the stacked rods to form another long rod
(repeat a number of times)
 





Diane B.
GlassAttic....polymer clay "encyclopedia"
http://glassattic.com/polymer/contents.htm
little bit'o photosharing: http://pg.photos.yahoo.com/ph/dianeatglassattic/my_photos


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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)
aliastriona_angerboda
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« Reply #5 on: August 10, 2006 09:51:56 PM »

Okay, so I just saw the gorgeous 'I is for illusion' ATC that you made, teapotdnky, and I had to come and find this.

I've been playing around with making patterns in the mica in my one package of Premo gold, but this is just awesome.  Now I've got a new fun technique to try out...
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teapotdnky
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« Reply #6 on: August 10, 2006 09:54:45 PM »

I'm so glad that you're going to try it! Remember, if cutting the top layer off is too hard, try sanding it after you bake it. It takes longer, but you can regulate your work easier.
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Nuhbe
« Reply #7 on: August 11, 2006 12:33:41 AM »

teapotdnky You're mica shift looks great!!! What you're gonna do with??
I think it would be cool if you cut out pieces and make a bracelet... something like that http://bibelot.biz/img_Items/img_Jewelry/img_Bracelets/90136649.jpg

And Dear, when I've seen you're tecture sheet my eyes have become like plates, Where did you get it??
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elabela
« Reply #8 on: October 03, 2006 08:46:48 PM »

more ideas of what you can do with micashifting techniques.. taken from my moms website(she is a p.c. artist) the bracelets are flat.. using all different texture sheets, polka dots are pretty cool..



make a marble effect


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« Reply #9 on: October 03, 2006 09:19:25 PM »

elabela, those bracelets are genius!  I'd love to see more pics of her work, I have been wanting to do a PC bangle!
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