Making Silicone Molds For Lost Wax Casting

[@TheOlim01]

Professor Ahr you make my favourite instructional jewellery videos

[@OnlineJewelryAcademy]

Wow, thank you! I'm glad that you like them. Thanks for watching!😀

[@darrenaalami8121]

OMG!!! I was about to try looking up how to and what to use on making wax castings of my silicon molds and... Whellaaaah! Your video came up! Thank you John

[@OnlineJewelryAcademy]

Glad you liked the video Darren. Thanks for watching! 😀

[@baalbaalzebab5657]

a simple and nice video, thanks John

[@OnlineJewelryAcademy]

Hi Robert, Glad you like the video. Thanks for your support! : )

[@aliceryan3399]

Thanks! I have heard of lost wax casting but never knew exactly what it was or what it was for. Now I sort of get it. Helpful as always.

[@OnlineJewelryAcademy]

Hi Alice, Lost wax casting is a huge topic that the OJA hasn't really covered yet. We have chosen not to put emphasis on it since most home studios do not have casting equipment. If you would like to learn more about lost wax casting, I'm sure you can find informative videos on other KZbin channels. Thanks for your support! : )

[@joycejoy7651]

I like this demo a lot, many thanks John, hope your well and behaving..! X 😎

[@OnlineJewelryAcademy]

Hi Joyce, Glad you liked the video. I am well and never behaving. Thanks for your support! : )

[@nevajuzo4051]

hi john, I like this video so much 🐉👏👏👏👍

[@OnlineJewelryAcademy]

Hi Neva, Glad you liked the video. Thanks for your support! : )

[@ingridsaab5413]

Hi Professor John Ahr, first of all I want to say thanks for showing this absolutely and amazing demonstration. I have a question I hope you can help me with. I want to cast a shell I found at the beach. It's one of those sea shells that are somewhat flat and round type . I want to reproduce my sea shell and make it as identical as possible and make it with silver. Do you have some advice which is the easiest way to do it?

[@OnlineJewelryAcademy]

Hi Ingrid, I've seen students use Delft Clay to reproduce shells like the one you described. But, the results always seem a little too thick to me. I think that making a cold mold of the shell is probably a better way to go for two reasons. First, you won't need to apply much pressure to the shell to push it into the cold molding materials. Second, the technique used in the video should produce a fairly thin model that can be cast using lost wax casting techniques. I hope this helps. Thanks for your support! : )

[@ingridsaab5413]

@@OnlineJewelryAcademy , yes I think making a cold mold is a better way. Is there a way I could replicate a thin replica but in a more simple way. The lost was technic has to many steps and I would need to buy many materials

[@ingridsaab5413]

@@OnlineJewelryAcademy , yes it would be too thick, and we don't want that

[@cpayne1757]

Hi Prof. Ahr- I'm hoping for the best mold object detail I can get. Do you still recommend Quick-Sil for this or do you know of anything better out there nowadays....? Thanks! -

[@OnlineJewelryAcademy]

There are many wonderful products on the market that will help you to get a highly detailed mold of your item. I don't know what you are attempting to make a mold of. So, I'm not quite sure what product to recommend. You might want to contact your jewelry supplier to seek their help. Or, visit a local caster and see what they might recommend. Good luck with your project. Thanks for your support! : )

[@Glennfariss]

Have you ever had issues with air bubbles? I am thinking maybe my wax is too hot

[@guntersg]

Great video John! What brand are the wax pellets?

[@OnlineJewelryAcademy]

I honestly don't know. They were in a small bag I had on a shelf. But you don't have to use injection wax. Inlay waxes work just as well. The biggest difference is that you can't file the inlay wax very well. Thanks for your support! : )

[@92simbah]

Can I use soy candle wax instead of jewellers injection wax? I'm looking to create a coin pendant from an impression

[@OnlineJewelryAcademy]

I'm not sure how cleanly the soy candle wax will burn out from the investment. And, I'm pretty sure that the soy wax is going to be extremely soft and hard to maintain. But, the only way to find out would be to run a test. If it doesn't work, you could buy a small amount of blue inlay wax for jewelry and use that in the mold. Here's a link for the blue inlay wax: amzn.to/2WsgeUU Thanks for your support! : )

[@randybldrgn]

Where can I buy the casting silicone.

[@OnlineJewelryAcademy]

randybldrgn The two-part molding material is available from Castaldo and most jewelry supply companies. 🙂

[@betsyrichardson9002]

can you use them in sand casting

[@OnlineJewelryAcademy]

Hi Betsy, The silicon molds can only be used to mold wax and cold materials like paper pulp. And the waxes are generally too soft to use for anything other than lost wax casting. I hope this answers your question. Thanks for your support! : )

[@sonuverma2796]

Sir I want to make hollow lord buddha idol then how to make their silicon model and then after silicone mold how to make wax model for casting

[@OnlineJewelryAcademy]

Hi Sonu, You should investigate foundry casting techniques used to cast bronze sculptures. The OJA is focused on providing information regarding jewelry making techniques. Thanks for your support! : )

[@manishakarande4908]

how to remove wax from the mould?can you tell me?

[@OnlineJewelryAcademy]

The wax is removed by flexing the mold. Therefore, it is important not to make your mold too thick. Thanks for your support! : )

[@manishakarande4908]

hi liked it too much

[@OnlineJewelryAcademy]

I'm glad that you enjoyed the video. Thanks for your support! : )