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Question:

next step in the lost wax method?

i am new to metal forging and casting and have opted for the lost wax method.i have carved and casted my first piece, I need 50+ more quot;copiesquot; what do i do next??Do i do a 2 part mould of my first cast then use that as a negative, but then what??Make more wax from that mould?Use the 2 part mould to cast directly into? do i make 50 mould's and smash them all off after casting or is there a better option.The cast is a 3inch challange coin that has 3D graphics on one side and writing on the other, it is casted in aluminium and i need a 50 run minimum dependen on the sucssfulness off them could go up to 250 run.

Answer:

Acrylic yarn is too soft for these itemsCraft cotton is rougher which you need for scrubbies and dish clothsThere are cottons that are soft and they're usually mercerized and used to knit sweaters and such Craft cotton isn't mercerized and therefor more suitable to make dishcloth, etc.
coins are usually stamped, but you would have a hard time to make a stampYou can make a two part mold and make your 50 wax replicasThen you would probably attach a number of those wax replicas to a sprue systemThen invest them and burn them out, cast them and the break them out and clean them up Though depending on your mold material you might get degradation of qualify with increasing number of replicasIt's going to be a lot of work and you better have sufficient experience in casting and metal working.
I would think acrylic would hold it 's shape better and be less likely to mildewI had a crocheted cotton face cloth once and you can't beat that for softness.

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