RE: How fine can you go?

From: Spielman, Roger L (
Date: Tue May 18 1999 - 23:54:43 EEST

Glyn, Paul, et al:

What does the final configuration look like? Would it be possible to use the
microstereolithography to form a "shape", vapor deposit the desired
substrate, then etch/disolve the original shape?

Roger Spielman
Rocketdyne Power & Propulsion
The Boeing Co.

> ----------
> From: PROFORM AG[]
> Sent: Tuesday, May 18, 1999 12:04 PM
> To:
> Cc:
> Subject: Re: How fine can you go?
> Glyn,
> we have a prototype microstereolithography apparatus that is able to
> achieve resolutions in the 5 - 10 um range (including layer thicknesses in
> that order). There are still some geometrical restrictions for the parts
> that can be made by that process but we would be happy to give it a try.
> Sincerely
> Paul Bernhard
> Managing Director
> Glyn Churchman wrote:
>  I wanted to pass this along for the RP community to comment on.  It
> appeared today on the model making list. I am guessing that it is not
> possible. If you make the assumption that they are going to investment
> cast a metal part, would anyone have any ideas? Here is the post:
> Has anyone come across any new RP machines with build levels smaller
> that the Sanders machine?  The Sanders has a Build layer: 0.0005 in.  An
> engineer came to me with a upcoming project that will have small channels
> for a medical instrument.  Micro Fluid Dynamics is greatly affected by the
> steps left behind.  Believe it or not  he is looking for one in the 5-10
> microns.  (This is where you might be tempted to laugh)
> Sincerely,
> Glyn Churchman@Prototech, Inc.

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