Re: QuickCast in a hurry

From: Vern Carter (
Date: Fri Mar 26 1999 - 02:21:13 EET

The SLS sand mold process you speak off can be much less than the production of a
master pattern. We currently offer both services and because the Sandform Material is
so inexpensive to start with, the cost of a simple Sandform mold is also relatively
inexpensive. In addition, our experience has been that the Sandform material builds
much faster in the SLS machine because of layering and temperature differences when
compared to the SLS master pattern material. However, when you consider a sand core or
shell similar to the widely published Woodward Governor, the cost rises due to the
complexity and the need for additional steps. We price Sandform molds about the same
as a waxed Zcorp master patterns. Both materials and process are best used when fine
feature detail are not critical.

"This is NOT an advertisement!!!!"

Vern Carter, CTS

-----Original Message-----
From: Tom Richards <>
To: <>
Cc: <>
Date: Thursday, March 25, 1999 11:35 AM
Subject: RE: QuickCast in a hurry

>Yes, shell molds from SLS are certainly a way to go.
>How does the cost of an SLS sand mold compare with the cost of an RP pattern
>for shell molding, either of which is destroyed in the making a single casting?
>At 12:36 PM 3/25/99 +0000, you wrote:
>>I think I may have missed the earlier parts of this thread, so I do not
>>fully understand your requirements. One solution we have used for
>>parts in small quantities that would normally require a pattern set to
>>be made, is to use the Sand Sintering process. We find most foundries
>>have no problem with this, because you supply the full sand set and
>>they just pour it. No draft angles required.
>>Graham Tromans
>>Rover Group
>>-----Original Message-----
>>From: ATiburon
>>Sent: Thursday, March 25, 1999 2:44 AM
>>To: tomr
>>Cc: ATiburon; rp-ml
>>Subject: Re: QuickCast in a hurry
>>In a message dated 99-03-23 11:25:14 EST, you write:
>><< >> Dan: We pour ductile iron (3-1/2 weeks) from RP patterns
>>(1-week). >>
>>As I understand, ductile iron, is done more commonly in sand casting.
>>patterns need to be either designed for that process, or converted into
>>patterns that would work, as a matchplate for instance. Most sand
>>foundries aren't geared towards prototype work though. That is the
>>process I
>>would investigate rather than investment casting.
>>Andy Scott
>>Lockheed Martin Aerospace
>>For more information about the rp-ml, see
>For more information about the rp-ml, see

For more information about the rp-ml, see

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