Steve, Not that is was your concern, seeing as he only gave you two samples to work with, but I wonder if your customer did any cross-sectioning to see if he got good connections that didn't do any damage to the barrel and attached inner layers, after he did his electrical testing. regards, Bev Christian Nortel > ---------- > From: Stephen R. Gregory[SMTP:[log in to unmask]] > Sent: Sunday, November 01, 1998 2:22 PM > To: [log in to unmask] > Subject: [TN] Assy: Low quantity Press-fit connector tip... > > Hi All! > > This is a tip I discovered yesterday that works so good I thought I'd > share it with ya'll. We had a customer show up Friday afternoon that > needed > two prototypes built ASAP (don't they all)?. > > Feeling kinda' generous, or greedy (depends on your point of view), > we > said we'd do em' and they could have them back on Monday morning. > > I went ahead and hand placed them since the most of the material for > the > boards were engineering samples (strips, loose parts, etc.), but the one > fly > in the ointment with these boards, was that they used a right angle > press-fit > connector on them. It goes without saying that I wouldn't have any proper > tooling for the connectors, but I came up with a way to press them in > without > tooling and it works GREAT! > > These were shielded ERNI connectors, about three inches or so long, > six > rows of leads, right angle female types. > > I've got a manual arbor press, but not the support tooling for the > connector. So what I did was to manually place the connector in the holes > and > get the tips of the leads to protrude just a bit out the backside (you > should > be able to do this if the lead length is spec'd right). Then I took > another > connector and placed the hole openings over the lead tips matching it > position-wise to cover all the leads, and used that connector as my > "anvil" to > press the board onto the connector, which is backwards from what we do > normally. > > So basically, I had the board "sandwiched" between two connectors > when I > put it beneath the arbor press head. The one connector on the bottom was > the > one being installed into the board, then you have the PCB, and then the > "anvil" connector whose hole spacing is an exact match and distributes the > pressure equally, and supports the laminate around the holes to press the > PCB > onto the pins...it doesn't hurt the "anvil" connector either! > > You wouldn't want to have to do a bunch this way, and this only will > work > with right angle connectors, but in a pinch this works great! > > -Steve Gregory- > > ################################################################ > TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c > ################################################################ > To subscribe/unsubscribe, send a message to [log in to unmask] with > following text in the body: > To subscribe: SUBSCRIBE TechNet <your full name> > To unsubscribe: SIGNOFF TechNet > ################################################################ > Please visit IPC's web site (http://www.ipc.org) "On-Line Services" > section for additional information. > For technical support contact Hugo Scaramuzza at [log in to unmask] or > 847-509-9700 ext.312 > ################################################################ > ################################################################ TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c ################################################################ To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body: To subscribe: SUBSCRIBE TechNet <your full name> To unsubscribe: SIGNOFF TechNet ################################################################ Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information. For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312 ################################################################