hiya there, i am relatively new to sculpture and the whole casting process so please excuse my ignorance!
I want to be able to make an eventual cast of my face and also a copy of my face with embellishments added. I would like it to have an off-white semi-translucent look so have been thinking about using wax, resin or glass.
I really would like to know how I would be able to make a mould of my face after adding embellishments. Shall I use oil based clay on my initial plaster cast to add them with? And if so, what should I use to make the mould afterwards?
Many thanks if anyone understands my problem!
take it one step at a time; do you have someone lined up who will make the mold of your face & does that person have experience taking a lifecast mold off a human model?
Your options for materials to make the mold are alginate or silicone - I have used both Alja-Safe (alginate) and Body Double (silicone); the body Double is archival, Alja-Safe is single use - possible two castings at best if the mold is carefully demolded.
Are you planning on melting clay & casting that into the mold to get a clay positive or casting plaster?
thanks for replying!
i had thought about clay but i wasn't sure whether there was a certain type of clay I would have to use and how long it would take to dry etc. How could I melt the clay?
My other idea was to cast the face in wax and then add imprints and/or other wax casts of embellishments to the face by heating it a little. Would this work?
the most common method would be to make a mold of your face, then cast the mold with a plaster like hydrocal to make a reproduction.
then on the reproduction you sculpt the embellishments in clay (I recommend using a non-sulfur oil based clay like NSP Soft by Chavant Clay). Once you have that sculpt completed then you can make a new mold off the sculpt. Once you have that mold made you can cast the mold with many different casting media like resins, wax, sand, plaster, concrete, etc.
If you just melted the clay & cast that into the mold then you would have a clay casting that you can then modify, etc. It would take a few hours to cool & become stable. Talk to the clay company about that time frame - in this case Chavant - heres their website: www.chavant.com
Wax could work directly too... I guess it would depend on what sort of detail you're trying to achieve and how good you are with working wax....