Re: Dissolving SL Resin?

From: Stanley Lechtzin (
Date: Sat Jan 25 2003 - 06:36:49 EET

Hi Rob -

How about using the Sanders process? The support wax used in this process
will dissolve at approx. 60 deg. C. using BioAct as a solvent.

- Stanley

At 08:48 PM 1/23/2003 -0500, Rob Connelly wrote:
>Hello RP'ers,
>I have a resin question for the group. I have a customer who wants to
>make some tiny little parts on a high-res SL machine for a medical
>application. Trouble is, he needs the parts for a process similar to
>investment casting wherein he will shell them with something, and then
>dissolve the SL part back out of the shell. He can't use high
>temperatures as in investment casting -- he needs to use a solvent.
>So, is anyone aware of a resin that can be used in a high-res SL machine
>(either a Viper or a 250HR) that can dissolve in acetone, xylene, MEK, or
>other such nasty chemical? Do the old acrylates dissolve? My customer
>has told me that just softening or deteriorating is not good enough -- it
>has to dissolve. If this does exist, do you know of a vendor who has this
>combination to whom I can outsource the job?
>Thanks in advance for your time,
>Rob Connelly
>FineLine Prototyping, Inc.
>6300 Limousine DR
>Suite 130
>Raleigh, NC 27613

Prof. Stanley Lechtzin
Temple University
Tyler School of Art
7725 Penrose Ave.
Elkins Park, PA 19027

phone: 215-782-2863
fax: 215-635-2861
M/J/C-C web site
Online CAD/CAM I Course

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