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 > > > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 1.8e > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to > [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to > [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 > for additional information, or contact Keach Sasamori at [log in to unmask] or > 847-509-9700 ext.5315 > ----------------------------------------------------- > > --------------------------------------------------- > Technet Mail List provided as a service by IPC using LISTSERV 1.8e > To unsubscribe, send a message to [log in to unmask] with following text in > the BODY (NOT the subject field): SIGNOFF Technet > To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) > To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest > Search the archives of previous posts at: http://listserv.ipc.org/archives > Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 > ----------------------------------------------------- > > > --------------------------------------------------- Technet Mail List provided as a service by IPC using LISTSERV 1.8e To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF Technet To temporarily halt or (re-start) delivery of Technet send e-mail to [log in to unmask]: SET Technet NOMAIL or (MAIL) To receive ONE mailing per day of all the posts: send e-mail to [log in to unmask]: SET Technet Digest Search the archives of previous posts at: http://listserv.ipc.org/archives Please visit IPC web site http://www.ipc.org/contentpage.asp?Pageid=4.3.16 for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 -----------------------------------------------------