All,
We have been using DOW J to pour pewter into for some time. On one mold we
got well over 200 parts before we had to make a new mold!
Karl
-----Original Message-----
From: Doug Groh [SMTP:douggroh@rapid.com]
Sent: Monday, January 01, 2001 9:54 AM
To: David Bolack
Cc: rp-ml@bart.lpt.fi
Subject: Re: Prototyping
David,
With the melt temp of Pewter at 400 degrees Farenheit, I do believe
that silicon
rubber would work. I was using silicon rubber for pouring Low melt
alloys
containg tin bismuth at approximately 310 degrees. I used a silicon
rubber mold
and put it immediately after pouring, into a pressure pot at about
65-75 pounds
(paint pressure pots are readily available from Paint supplies or
Graingers.)
This
eliminated any air bubbles in your part.
Doug Groh
Director APDS
PGK Engineering
185 Elmwood
Troy, MI, 48084
248-577-5227
248-577-9869 fax
248-310-6198 cell
David Bolack wrote:
> Excuse this bit. I come from way left field of the engineering
industries. :)
>
> Not having much luck investigating the different rapid
> prototyping processes out there, I'm turning here for some
advice.
>
> We're investigating using rapid prototyping to create masters
for molds
> for pewter figures. It's a fascinating technoology that looks
like it
> could be used in this capacity, possibly far more cheaply than
hand
> sculpting. What I can't quite find out is what processes would
survive the
> 400 F temperatures for making our molds.
>
> Anything that will take detail well and survive making the mold
would be
> acceptable. Low cost, naturally, is a plus. :)
>
> Any pointers or direct advice would be greatly appreciated.
>
> For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
For more information about the rp-ml, see http://ltk.hut.fi/rp-ml/
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