IPC 6012 has specific requirements for the acceptance and rejection of
product...including workmanship (para. 3.3.9).

IPC A 600 is the visual acceptance 'supplement' or 'companion' to IPC 6012
as well as it contains a separate paragraph for workmanship (para. 1.9).

As both documents reference or acceptance criteria for workmanship...whats
not clear?

Franklin


----- Original Message -----
From: "Prasad Godavarti" <[log in to unmask]>
To: <[log in to unmask]>
Sent: Friday, May 21, 2004 1:56 PM
Subject: Re: [TN] conformance vs workmanship


> Guy:
> why is it that is no clear answer to this question:
> it seems to me that the 6012 is a requirement and includes not only
> controls but also specific pass/fail criteria.
>
> On the other hand IPC A-600 is a collection of photos that can be used as
> visual guidelines.
>
> So IPC 6012 should prevail both as conformance and workmanship.
>
> Am I wrong?
>
>
> Prasad Godavarti (Dr. G)
> Materials and Process Engineering Lead
> Orbital Sciences Corp.
> 4808146238 (phone)
> 8775402378 (2-way text pager)
> 4802067743 (cell)
>
>
>
>              Guy Ramsey
>              <[log in to unmask]
>              RG>                                                        To
>              Sent by: TechNet          [log in to unmask]
>              <[log in to unmask]>                                          cc
>
>                                                                    Subject
>              05/21/2004 08:36          Re: [TN] conformance vs workmanship
>              AM
>
>
>              Please respond to
>               "TechNet E-Mail
>                   Forum."
>              <[log in to unmask]>
>              ; Please respond
>                     to
>                 Guy Ramsey
>              <[log in to unmask]
>                     RG>
>
>
>
>
>
>
> A great question.
> The requirements in IPC standards reflect industry consensus limits for
> acceptability.   One of the posts suggests the IPC-A-600 is a workmanship
> standard. I see his point(IPC-A-600 defines "Target Conditions". The goal
> of
> every process should be to produce target conditions. You won't find
target
> conditions in IPC-6012) but I don't see it as a workmanship standard. It
is
> an acceptability standard that portrays requirements of other standards.
>
> The IPC standards committees get stalled when they attempt to define
> workmanship. One of the principles of standardization is: Standards should
> just include spec information.
>
> Yes, it is possible to conform to requirements and demonstrate poor
> workmanship.
>
> This is not unique. Did you ever hire a contractor to build a house or an
> addition to your home.
> Does meeting code ensure good workmanship? Code requires studs every 16
> inches. It doesn't say they have to be parallel. Ask the drywallers what
> they think of twisted non-parallel studs. Does meeting code ensure the
> building won't fall down or catch fire? It should.
>
> > -----Original Message-----
> > From: TechNet [mailto:[log in to unmask]] On Behalf Of Mark Hargreaves
> > Sent: Friday, May 21, 2004 10:15 AM
> > To: [log in to unmask]
> > Subject: [TN] conformance vs workmanship
> >
> > Hi All,
> > May be a dumb question, but here goes:
> > What's the difference (if any) between conformance to spec
> > (ie. IPC6012
> > class2) and workmanship?  Can a bare board that conforms to
> > the spec exhibit poor workmanship (or visa versa)?
> >
> > Thanks,
> > Mark Hargreaves
> >
>
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