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I need a mold advice


#1

Hello Community,

Firstly, let me state that while i have worked in jewelry for 5
years, i know little to nothing about CAD/CAM, molds, casting and the
likes. I simply know about

However, i have been asked to assist a client in replicating some
small plastic and metal parts for cell phones and pda’s. Thus far,
the advice that has been given to me has been to seek a metal mold
maker because of the thinness and precision required to make these
parts fit properly. Some parts are only 1mm thick.

The advice i seek is any and all that you are willing to provide. Is
silcone possible? Where can i get a metal mold make? Shrinkage?

I thank you all in advance,
Nicola
(in new york city)


#2

You may want to watch the videos for HD patterns, at
www.freemanwax.com The videos will show how to make clear silicone
RTV molds and how to make patterns using HD. This system will allow
you to make very fine detail patterns that can then be cast.

The system is particularly friendly if you have never made silicone
molds before. The silicone dispenses from a preloaded caulk style
cartridge and mixes as it goes through a static mixing tube that
fits on the end of the cartridge.

The HD material for making the pattern you will cast, is a liquid
with a viscosity similar to olive oil that fills the finished
silicone mold from a bottle and is then cured through the mold with
light.


#3
You may want to watch the videos for HD patterns, at
www.freemanwax.com The videos will show how to make clear silicone
RTV molds and how to make patterns using HD. This system will
allow you to make very fine detail patterns that can then be cast. 

People tend to like what they are used to, and vulcanized rubber
molds are what I am used to, over 4000. I have done a few silicone
molds, but I can achieve anything that can be achieved with a silicone
mold with rubber molds. I am sure HD system is good for something,
but it seems to be quite complicated for making wax patterns from a
mold. Rubber mold, inject wax, wax cools, remove. HD inject wax,
expose to light, remove from mold, cure in light. If you are shooting
20 waxes…wait and wait and then wait.

Richard Hart