I don't see how standards could deal with how parts are made. Where safety
depends on physical strength, standards can include tests to make sure it is
adequate. The same applies where safety depends on, for example, the integrity
of insulation inside components.
 
The preference order for specification in standards is:
 
1. Specify performance - does not restrict innovation;
 
2. Specify design - might not restrict innovation;
 
3. Specify construction - severely limits innovation.
 
With best wishes DESIGN IT IN! OOO - Own Opinions Only
 <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates
Rayleigh England
 
Sylvae in aeternum manent.
 
From: John Allen [mailto:jral...@productsafetyinc.com] 
Sent: Sunday, March 26, 2017 2:26 PM
To: John Woodgate <jmw1...@btinternet.com>; EMC-PSTC@LISTSERV.IEEE.ORG
Subject: Re: [PSES] 3D Printed Parts
 
Hi John,
 
I agree and their case of risk is a failure in the printer, the the printed
part.  Still looking for opinions on the question though - do our Standards
consider how the part is made?  If not, does it matter?  My gut says it doesn't
matter, our Standards are written to evaluate a design, regardless of how it's
manufactured.  But is that thinking still valid?
 
 
John Allen | President | Product Safety Consulting, Inc.
Your Outsourced Compliance DepartmentR
630-238-0188
 <http://www.productsafetyinc.com/> www.productsafetyinc.com
 
IEEE Product Safety Engineering Society - Acting President
IEEE Product Safety Engineering Society - Chicago Chapter Past Chair
Keeping our members informed and educated on Product Safety and Compliance
https://ewh.ieee.org/soc/pses/index.html
 
  _____  

From: John Woodgate <jmw1...@btinternet.com <mailto:jmw1...@btinternet.com> >
Sent: Sunday, March 26, 2017 8:17 AM
To: John Allen; EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> 
Subject: RE: [PSES] 3D Printed Parts 
 
None of the cited risks applies exclusively to 3D printed parts. You can just
delete '3 D printed' everywhere, except in the first case, and it is still true.

 
The first case is a red herring; the printer failed and caused damage. But if it
complied with 62368-1 (or maybe 60204-1), the wires would not have come loose
and/or would not contact the heat source.
 
With best wishes DESIGN IT IN! OOO - Own Opinions Only
 <http://www.jmwa.demon.co.uk/> www.jmwa.demon.co.uk J M Woodgate and Associates
Rayleigh England
 
Sylvae in aeternum manent.
 
From: John Allen [mailto:jral...@productsafetyinc.com] 
Sent: Sunday, March 26, 2017 2:01 PM
To: EMC-PSTC@LISTSERV.IEEE.ORG <mailto:EMC-PSTC@LISTSERV.IEEE.ORG> 
Subject: [PSES] 3D Printed Parts
 
Hi,
 
The link below is an interesting article on the risks of 3D printed parts.  I
wonder, however, if it's a mere scare tactic by Travelers for more insurance, or
is there something more to this?  In theory, the requirements for any part
(regardless of how it's manufactured) are covered in our Standards, right??
 
Has anyone ever looked at the requirements from a view of how the part is
manufactured?  Should we?  How do we know the requirements are adequate
regardless of the mfg'ring process?  How do we know we're not missing something?
 
If the link below doesn't work, google Travelers preparing for the risks of 3D
printing in manufacturing and it should come up.  The article was on linkedin.
 
https://www.travelers.com/business-insights/industries/technology/preparing-for-
risks-of-3d-printing-in-manufacturing?MMT=DS
<https://www.travelers.com/business-insights/industries/technology/preparing-for
-risks-of-3d-printing-in-manufacturing?MMT=DS&cm_mmc=LinkedIn_Paid-_-BI-_-Techno
logy-_-4RisksIT&plc=145544556&adid=317197804&cid=78800898&cmpgid=10907740&dclid=
CIXq9sqa9NICFVODaQodGcAHvA>
&cm_mmc=LinkedIn_Paid-_-BI-_-Technology-_-4RisksIT&plc=145544556&adid=317197804&
cid=78800898&cmpgid=10907740&dclid=CIXq9sqa9NICFVODaQodGcAHvA
 
John
 
John Allen | President | Product Safety Consulting, Inc.
Your Outsourced Compliance DepartmentR
630-238-0188
IEEE Product Safety Engineering Society - Acting President
IEEE Product Safety Engineering Society - Chicago Chapter Past Chair
Keeping our members informed and educated on Product Safety and Compliance
 
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