Multiple Investment Castings

From: wayne l foss (wlfoss@cacd.rockwell.com)
Date: Thu Oct 22 1998 - 19:21:09 EEST


List - your suggestions please.

I have a possible need to produce a quantity of 14 investment cast parts
for spares of some out of production equipment. All of the previous
tooling has been destroyed (1989 production). The part is a 6 sided box
approximately 15.25 x 12.62 x 7.75 inches. This is an electronics
enclosure with one open side and it must be an aluminun investment
casting (we have no choice, it MUST use the same materials and processes
as those already produced - a government requirement). The part will be
post machined to add tightly tolerenced details.

What would be the most efficient, quickest and cost effective way of
making the 14 copies? I am well aware of the DSPC process of
Soligen/PartsNow and will be contacting them. I also have a FDM 1650
in-house that could make ABS masters - but not quickly enough. I have
thought of making a master part and creating a RTV mold to create the
wax patterns, but they would need to be made in sections and bonded
together.

I also need to guess at how much will it cost? And guess what? No 3D
solids data! Why can't they settle for 1 or 2 parts?

I do appreciate your comments. Thank you,

Wayne

-- 
==============================================================================
- Wayne L. Foss                            wlfoss@collins.rockwell.com
- Advanced Industrial Engineering          Phone  319/295-2631
- Rapid Prototyping Specialist             FAX  319/295-5429
- MS 106-176
- Rockwell Collins, Inc.	 
- 400 Collins Road, NE             
- Cedar Rapids, IA  52498-3161
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