alternative solvent for sla parts? -Reply

From: Michelle Wyatt (
Date: Thu Feb 03 2000 - 22:28:30 EET

I am planning to discuss this topic and a couple of other related ones
during one of the break-out sessions at the 3DSNASUG meeting March
5-9. DSM Somos(R) has spent a lot of time investigating this question
based on a customer request, and we have found alternative solvents.
Unfortunately, propylene carbonate, isopropyl alcohol and TPM all fail to
meet the AQMD requirements. If you are unable to attend the meeting, I
will post my presentation on our web site: under
the "What's New" section after the User's Group meeting.

Hope to see you there!


Michelle P. Wyatt
Technical Marketing Engineer
DSM Somos(R)
2 Penn's Way, Suite 401
New Castle, DE 19720
Tel: 302-328-8537
Fax: 302-328-5693

>>> "Alaniz, Pedro A" <> 02/03/00
11:06am >>>
Has anyone tried a different solvent, besides TPM, to clean the sla parts?
Southern California AQMD is a little more strict about the environment.

The internal Environmental office does not feel that TPM meets AQMD
1122 section c and d. Thus there is a need to find an alternative way to
clean sla parts. Rule 1122 says that a cleaning material shall have less
than 50 g/l of VOC as used. Or be used in an airtight or airless cleaning
If I want to keep using my RAMCO wash station I need to use something
besides TPM. (less than 50 g/l of VOC)
If I want to keep using TPM I need to buy another cleaning system, maybe
ultrasonic cleaning system.

Pedro Alaniz
The Boeing Company

For more information about the rp-ml, see

For more information about the rp-ml, see

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