. . . I first make silicon molds for them and then make the cameos in thousands of colour combinations -
. . . I usually make the base cameo first, then add the motive, make the mold and after that fill the mold with the colours I want - so I basically need to fix the base and then make a new mold for them ^^
Nice cameos! and love seeing clayers making molds...just too much
I'm a little confused about your method though, but a lot of that has to do with terminology and lots of people use different words for various parts. So, here are definitions I'll
use in asking questions below about how you made yours so we can make sure we're talking about the same things
...I'll call the metal flat-backed frame cells bezels
, since that's basically the function they serve, though the cell walls here are wider and fancier and look like a frame.
...I'll call the background part of the cameo that fills the bezel cup the cameo base
, like I think you did (yours are mostly black).
...I'll call the foreground part of the cameo "on top of" the cameo base the cameo motif
, like you did (yours are mostly opaque white).
(...the finished cameo in bezel would be a brooch or pin
if it has a pinback on the flat back side)
, or pushmold in this case, is a concave 3-D shape into which a material is cast
...then the final shaped material that's removed from the mold will be called a cast or a pull
is a stone/etc that's flat on the back so it can be placed flatly into a bezel or another kind of walled cell --or used in other ways-- rounded on the top and often round or oval)
(...a true cameo is a piece of shell or sometimes rock/agate/glass/resin/etc that has different color(s) at different depths... the background area of a cameo will be ground/carved away and end up showing the deeper-interior color, like translucent peach if using a conch shell; that leaves an upraised bas relief image that's lighter in color if it's a conch-type shell which will often be partly translucent**)
Okay now . . . so are either of these what you're doing?:
1...forming a cameo base from raw clay that you think will fit into your bezel, and hardening it...then making a pushmold (you used silicone for yours) from that base shape...then pressing new clay into that pushmold, removing, and baking the raw clay
2...making a mold from an existing charm, button, or bit of decoration/etc somewhere...pressing clay into the mold, removing, and baking the raw clay
3...gluing the hardened cameo base into the bezel...then gluing the hardened motif cast onto the cameo base
1. Where you said this above though,
it sounds like you're creating a mold from a complete
cameo, then filling the bottom-most motif part with white clay and filling the remainder of the cameo mold with the black...then removing and hardening. Doesn't look like that's what you're doing though since your cameo motifs look quite separate from the cameo bases.
Are you doing either of these, or something else? If something else, describe it again pretty-please using "my" terminology so I can get my head straight.
Polymer clay faux cameos are usually done in two separate parts, but could be done in the traditional way by carving down into a slab of clay (raw or baked) that has 2 color layers.
The motif would usually be cast in a mold, though it could be free-formed...then the raw clay motif would be placed on top of a contrasting color raw clay cabochon, or a sheet later cut into a shape and edges rounded (or either part could be hardened first).
If the whole cameo or just the base needs to fit exactly into a bezel, the raw clay base would usually be shaped then placed into the bezel and pressed on a bit until it reached the sides. Sometimes it's fiddly to make it fit well without too much pressing (even if figuring out the proper volume of clay that will work and preforming on a template/etc), so a mold might be made from a perfect (hardened) one if the same bezel shape/size would be used often (I think that's what you did?).
There's also a bit about making faux cameos with polymer clay on my Molds
page, as well as antiquing them, bas relief and intaglio stamping, etc, if you're interested:http://glassattic.com/polymer/molds.htm
And the Onlay
page and the Carving
page would have info about those basic methods too.
(and lots more possibilities in this image search: https://www.google.com/images?q=polymer+clay+cameo
** these pics show motif casts (from an entire cameo mold) made with all translucent
clay and with translucent clay plus a tad of white added which will both appear more opaque in the thicker areas, as well as with totally-opaque white:http://www.etsy.com/listing/80566480/lady-goddess-skull-cameo-3-mold-lot-hardhttp://simplysculpted.net/shop/product_info.php?products_id=53