 ArtMetalsocial networking for the metal arts |
|
i am new
shahid hussain -
Sunday, August 12, 2007 - 9:14am
plaster for metal casting hi all!i am new here, i am sculptor. i 've been cold casting ,resin and in cultured marble. now wants to work in metal but neither have experience nor have foundries which gives facilities to lost wax casting,other than sand casting.that does come to my requirment i know plaster and silicon mould making and wax casting,but have no idea about slurry shell based on which components.or what ratio or component should add into plaster for metal casting? because the place i live plaster for metal casting is'nt avalible accept plaster of paris.so again asking how to add sand or etc,to prepare the plaster for metal casting and what ratio? i'll be very thankful for your help.  you have many options, like
visitor -
Tuesday, August 14, 2007 - 10:29pm
you have many options, like ceramic shell(investment casting) which uses zircon sand,zircon four, mullite sand & flour and a binder called colloidal silica. the other option is to use investment powder and do lost wax process in a flask. but this has a long process. to get acquainted with it, google search investment casting or investment powder  Hello Sahid Actually Plaster
bpfink -
Wednesday, October 17, 2007 - 9:26am
Hello Sahid Actually Plaster of Paris is same as #1 Molding Plaster and is fine for Investment casting. I use a standard mix of about 50% sand to 50% plaster and vary the proportions only for exceptions. The sand used is a general blend called Brick Sand here and is commonly used to mix with Portland Cement for concrete and mortar. Nothing fancy at all. Actually the varying sizes of the grain in it are a plus with the coarsest grains being slightly smaller than grape seeds. The mix used next to the body of the wax or surface to be cast are often smaller and would fit through a window screen. To be more precise, put the words Investment Casting in the artmetal search engine and you will get quite a bit of information on this already written. In addition here are a few other related comments: On Casting waxes On comparing Plaster / Sand Investments vs. Ceramic Shell On Ancient Casting Methods |
|
ArtMetal
I think if you search the
I think if you search the archives for information by bruce fink on investment casting. You will find his recipe for the investment.
Gene Olson
Sculptor
Elk River, MN