So many casting material choices! Here we talk about what and how you can cast in ComposiMold and ImPRESSive Putty Molds.
EPOXIES: Epoxy Resins, Epoxy Putty, or Epoxy Clay
The best tip is to use ComposiMold Epoxy Resin (of course :)
). ComposiCast resins are very forgiving
because you can be off by 10% or more and still get great plastic castings. We
are finding that some of the very cheap epoxies are leaving a whitish surface, I
believe because of the diluent added to reduce the cost. This is also why those
resins don’t harden well sometimes if there is more humidity. This isn’t an
issue if you are adding colorants. Use ComposiCast White or Black, or use
ComposiCast Clear with different colorants when using the epoxy in ImPRESSive
Putty. For larger castings of 8+ cubic inches, choose epoxies with longer cure
times of 24+ hours. Experiment with freezing the mold prior to pouring epoxy
resins that create a lot of heat during curing. Epoxy resins that require an
added heat source for curing are not recommended.
Resin casting tutorial: https://www.youtube.com/watch?v=Jq-9mkg1gXc
Astroboy Action Figure Casting: https://www.youtube.com/watch?v=T1bUl8dE8TU&
URETHANE OR POLYURETHANE:
For fast cure urethanes, use ImPRESSive Putty because it can
handle higher temperatures. Choose a urethane with a longer cure time. These
create less heat as they cure. You can also experiment with freezing the mold
prior to pouring higher temperature urethane resins, adding fillers, or pouring
in intervals. Be sure to use talc powder/baby powder as your mold release
before each casting made. Urethanes dislike moisture so the talcum powder makes
a nice moisture barrier.
Plastic Duck: https://www.youtube.com/watch?v=_bsnkmdknX4&
PLASTER/CONCRETE:
ComposiMold’s Plaster of Paris or add the Plaster Additive
to give harder, stronger plasters in ComposiMold molds. Mix plaster and water
together in a 72 parts plaster to 28 parts water, by weight, or to a
toothpaste-like consistency. The thicker
the better for stronger molds. Use ComposiMold Plaster Additive in traditional
plasters for strong, hard plaster. Fast curing masonry cements work great and
cure extremely strong. Follow
instructions for mixing ratios. And we also have the ComposiStone for hard
plasters.
Plaster Casting of Tiles: https://www.youtube.com/watch?v=mlgzLffKy1o&
Plaster Casting of Duck Decoy: https://www.youtube.com/watch?v=s_x2TM943yY&
Big dog in Concrete: https://www.youtube.com/watch?v=xnG813pMhSY&
SILICONE:
Silicones work great in ComposiMold mold or ImPRESSive Putty
molds. Make castings with both platinum and tin cured silicone rubbers.
Silicones: https://www.youtube.com/watch?v=UcX4xtJprXY
Soft Bait Fishing Lure Rubber: https://www.youtube.com/watch?v=JqmX8riVyJk&
SOAPS:
Chill the mold prior to pouring any higher temperature soaps
(above 140ºF). Shea Butter and Glycerine Soap make great soaps! For higher temperatures, use ImPRESSive Putty.
Bath bomb: https://www.youtube.com/watch?v=-f2ZwXe0bwg
WAXES: (for candle molds or encaustic casting)
Soy, Paraffin, Beeswax, and Melted Crayons work really well.
Chill the mold first for higher temperature waxes (above 140ºF). For higher
temperatures, use ImPRESSive Putty, it works awesome (oh wait I said that above
too).
Candles:
CLAYS, Polymer Clays, Metal Clays, Real Clay, Modelling
Compounds, etc.
Use any type of polymer clay, modeling clay, putty, or real
clay for push molding in a ComposiMold. Do not use clay in a slurry form or the
water will degrade the mold.
Polymer Clay: https://www.youtube.com/watch?v=Ch2bvuOOpPA&
Clay Push Mold of a leaf: https://www.youtube.com/watch?v=KkbhtzgcbGw&
HEAT FORMABLE PLASTIC
The plastic that is heated in hot water can be molded and
formed using ImPRESSive Putty just like a push mold. Push it in, let it cool.
Push Mold of Heat Formable Plastic: https://www.youtube.com/watch?v=Sd_77tffByI
CHOCOLATE:
Pour or pipe many types of melted chocolate into your mold.
Lightly tap or vibrate the mold to release air bubbles in the chocolate. No
mold release is necessary for chocolates.
LARGE Chocolate: https://www.youtube.com/watch?v=nEtlj8YtcCo
BUTTER
Butter fills funny as it doesn’t press back on you. Use soft
butter and press it into your mold. Place it in the refrigerator to chill and
harden.
Butter Buddha: https://www.youtube.com/watch?v=uhMS3JGr90s&
FONDANT:
Press softened fondant into your mold with your hands or a
rolling pin and remove immediately. No mold release is necessary for fondant.
Fondant press mold: https://www.youtube.com/watch?v=5l93-7UMCHA
ISOMALT or Sugar Candies
The Food Safe ImPRESSive Putty can withstand the heat for
smaller candies. Several stores in Colorado have enjoyed making special candies
this way. Larger molds, above about 3 cubic inches may have heat damage. Pour
water in the mold and then wipe clean before making your mold to remove the
activator from the surface of the mold.
Small Candies: https://www.youtube.com/watch?v=5QJ_ePYpoaA&
Papier Mache:
Work by building up in layers and letting the layers dry
before moving on. You can make some beautiful castings with just paper and
glue.
Papier Mache: https://youtu.be/b513iqtwjjM
ICE
Freeze your mold before pouring in cold water. Put back in
the freezer to freeze the water. Chillingly good results J
Ice baby, ice: https://www.youtube.com/watch?v=SK-JP4Bt37o
Cookie Dough
Use a no-rise cookie recipe, so leave out the Baking Soda.
Press the cookie dough into the mold, pull it out, and cook it.
GUMMIES
Make your own Gummi recipe, or Jell-O with ¼ of the water as
they suggest. Use vegetable oil as a mold release. Make sure to get everywhere
with the release or it will stick. Let the Gummi liquid cool to room
temperature before pouring into your mold.
Venus Di Milo Gummi (Doh!) https://youtu.be/GaQ9DXi3L_U
LEGO Gummies: https://www.youtube.com/watch?v=HA6U5u56y1I&
METAL
You can use low melt metals, like our Wood’s Metal, in the
ImPRESSive Putty. You can also use ComposiMold and ImPRESSive Putty for the
lost wax process: Make a wax casting of your object, make a plaster mold of
that wax object, burn it out, and then pour in your molten metal (easy! Right?
Okay, this is pretty advanced).
Lost wax process: https://www.youtube.com/watch?v=9I3Q9I_ziko&
Low Melt Metal: https://www.youtube.com/watch?v=5l93-7UMCHA
You can also try adding fillers and dyes to casting
materials, using ComposiMold as a rubber casting material, Modeling Compounds,
Polyester Resin, Paper Mache and many more! You may also like our Re-usable
Molding Putty, ImPRESSive Putty.
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Enjoy Mold Making and Casting with ComposiMold, ImPRESSive Putty, and EpoxyColors