How to Make Pull-Apart Molds

Gregg Burgard shares his technique for making pull-apart molds. Watch as he uses mica powder and mold rubber to pack the mold before vulcanizing.
Check out the product featured in this video:
• Mold rubber: tinyurl.com/3vyk2znf
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[@DLEngle]

Thank you, great video. I hope you will make another video about the second more complicated mold shown here.

[@degacci]

Love this thanks

[@aurorahuang]

thanks for sharing!

[@iliakovalev5097]

Thank you for this detailed instruction vodeo! I am looking at setting up casting equipment at my shop instead of outsiurcing this part of production process for my miniature motorcycle models. You helped me estimate the complexity of the process. And better appreciate the work that the craftsmen do for me, when I outsorce the casting of parts. Thank you!❤

[@farooqalikhan8400]

Welcome back ❤

[@marcuscove]

I like this ! it's a bit like a sandcast, but with Rubber instead of casting sand. And of coarse there's the additional step of vulcanizing the mold.

[@Lichinha87]

Question; why mica powder specifically? Couldn’t cornstarch be used? Thanks in advance

[@duocmat5192]

👍👍👍♥️

[@jorgenava1726]

El hile de silicon es muy apreciado,pero un poco mas caro.
El hule convencional que se usa para vulcanizar,tiene una propiedad increible...por ejemplo sí se copia una medalla y este molde de ahoga durante 24 horas en petroleo......se inchs aumentando asta 500 por ciento la figura que se encuentre grabada:posteriormente con parafina colada se obtiene una reproduccion bastante mas grande y a un costo minimo.
Intentelo es fabuloso

[@jeffalessi]

Which specific mold rubber are you using in this tutorial? Thank you and have a most awesome weekend!

[@bevonhenry6751]

Good night, lovely information on the pull apart because I’m constantly having to re do molds because of the cutting finish. If I don’t don’t hv the micro powder what else can I use?????

[@RioGrande1944]

Hello! Thank you for your question! Some people use Talc Powder, but the Mica works better.

[@racheldida]

where can we purchase mica powder?

[@JohnNordDesigns]

Question: at what temperature does the vulcanizer have to stay at in degrees and how long? I have a older one that is not working full strength

[@RioGrande1944]

This depends on the rubber you are using:
Belicone Rubber 350F for 15 mins per ¼ sheet.
Castaldo Rubber VLT 160F for 90min 170F for 60min 180F for 45 min 190F for 30min
Castaldo Super Hight Strength 350 for 15 min peer ¼ inch sheet
Gemni Rubber 350F for 7 min per ¼ in sheet
Different mold rubbers cure at different temps and times. Please follow the manufacturers instructions.