RE: SLS question

From: Miller, Michael W (
Date: Tue Nov 05 2002 - 21:21:06 EET

I have never run tests on used Duraform, but the old Protoform Composite had
serious degradation of mechanical properties with high cycles thru the
machine..... worst case was 1/3 (one third) of ultimate, down to 2 ksi.

Disclaimer: Engineer and out the other!
Experience is something you get right after you need it.
Michael W Miller ( 206-655-3289
The Boeing Company M/C 45-17 66-ZA-2320
Rapid Product Manufacturing 655-4366 Lab 655-4365

-----Original Message-----
From: Brian Caulfield []
Sent: Tuesday, November 05, 2002 5:28 AM
To: Rapid Mailing List
Subject: SLS question

Does anybody know of any study that was carried outon the degradation of PA
powder with regards to the number of times it was used on the machine. That
is the difference between virgin powder and lets say powder that has been
ran through the SLS proces 10-20 times. Does the mechanical proerties
change etc..

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