Vulcanized Rubber Molding with Castable Wax


#1

Hi, I have just read the Vulcanized Rubber molding White Paper.

The paper states “Castable Resin can also be used for RTV processes. This can be useful to jewelers already working with this material. Castable Resin prints are softer than our Standard Resins and so post-curing is required before using Castable prints as master models.”

Is this also true for Castable Wax?

Thanks


#2

Not sure what you mean…
You can’t CAST castable resin in a Silicone mold.
But of course you can use a print in castable as a master.

You can take Silicone molds off of jello…
Condensation cure silicones ( tin ) do not tend to stick to Acrylic based materials and so separate cleanly.

What we do is model a pattern split in two- with half of the pattern embedded in a separation plane, and the other half embedded in a complimentary separation plane- so we can pour silicone rubber on BOTH halves of the pattern at the same time and get a mold that fits together for casting parts.

here you can see 4 printed parts- the 2 outer casings, and the two split masters.
image1

Put the outer casings on the split masters and they are ready to pour RTV.

image2

image3

When you pull off the outer casings, you see two mold halves on their respective masters.

image4

You pull them off, flip them over, and put them in their casings

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The two casing halves mate to form a single mold, and you don’t have to cut the mold open.
Plus, you can use this system to produce as many identical molds as production demands-
All you need is a separate set of casing parts for every mold you want online. Just one set of split masters with outer casings will produce a silicone mold every day.


#3

Sorry, I specifically meant whether castable wax would need to be post-cured in order for a room temperature or vulcanized mould could be made from it. It’s clear that the castable resin requires post-curing but it isn’t clear re the castable wax resin.
Thanks!