silver casting sweets in jewellery class :) x?
Is it possible to make a flask of plaster up with one of those loveheart sweets on a sprew and cast it in silver?
If so, would it cast well or leave lots of residue?
Any help appreciated 
x
Posted in Jewelry | 
Tags: aluminum boxes, Blogs, Casting, casting aluminum, Class., jewellery, loveheart sweets, Qatar, Related, SILVER, sweets, X examRelated
2 Responses to “silver casting sweets in jewellery class :) x?”
if you think the sweet would burn out cleanly. Not sure what sweet you are talking about, but as they are mostly sugar and therefore carbon they should burn out. If in doubt check with your teacher.
Or you can always try it out, if it doesn’t come out you can always reuse the silver.
I’d probably spray it with something like hair polish or some other varnish before investing it. Just in case the moisture in the plaster will start dissolving it.
Cristobalite is the casting medium you would probably want to use since it is commonly used by metal smiths and jewelers for pieces. It has many different trade names but it is basically a high temperature casting medium that reproduces exquisite detail (why it is favored). Jewelery suppliers and glass art suppliers both carry high temp investment mediums that contain cristobalite. And silver and alloys are all over 1500F
http://www.riogrande.com/ is a good place to find what you might need.
As a side note, plaster is not a great medium for high temperature casting as it breaks down, is sensitive to thermal shock, and does not give a great reproduction.
Sorry I forgot to add this:
I would use the plaster to make a 2 piece negative of the candy with sprew added. I would pour wax into the negative mold (micro-crystalline works best) and create a positive of my jewelery. Now, you can add fine details, fix blemishes and have a look at what the finished piece will actually look like. Now, just invest with the high temp medium, melt out the wax, and you are ready to cast. Have fun! If you want more info than look up Lost Wax Casting Process.