just to be clear -- drill shanks are .125" -- this is the part you want to
use...
the 'twisty bits' for the techincal folks here, are irrelevant for this
purpose and can be snapped, or cut, off
John Burke <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
09/01/2010 06:02 PM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
John Burke <[log in to unmask]>
To
[log in to unmask]
cc
Subject
Re: [TN] PCB Indexing Pins / PWB Coupon pins
Speaking of probability....
If they are breaking many .125 drills don't bother getting circuit boards
made there......8-) Imagine the attrition rate of the 0.006 mil drills
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Whittaker, Dewey
(EHCOE)
Sent: Wednesday, September 01, 2010 11:55 AM
To: [log in to unmask]
Subject: Re: [TN] PCB Indexing Pins / PWB Coupon pins
So you're relying on twists of fate.
Dewey
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Ian Hanna
Sent: Wednesday, September 01, 2010 10:59 AM
To: [log in to unmask]
Subject: Re: [TN] PCB Indexing Pins / PWB Coupon pins
talk to a PCB fab shop -- if you can live with .125" mounting holes you
should be able to get boxloads of broken or spend drills...
Chris Mahanna <[log in to unmask]>
Sent by: TechNet <[log in to unmask]>
09/01/2010 01:53 PM
Please respond to
TechNet E-Mail Forum <[log in to unmask]>; Please respond to
Chris Mahanna <[log in to unmask]>
To
[log in to unmask]
cc
Subject
Re: [TN] PCB Indexing Pins / PWB Coupon pins
Dear X,
What sizes? How many do you need? If you're looking for a small
quantity
of cut pins, forget it. Go to smallparts.com order SS precision
machined
stock (it's cheaper that music wire, go figure). Use a diamond cutoff
wheel to cut them and then debur. Tumble debur does not work well with
the cut ss. We use SiC grind.
The IPC A/B-R Standard is 2mm drill, 0.078" pin stock. This yields a
slip
fit that works for your smallest laser blinds.
Oh ya, Louis and Tom - I never replied about the brilliance of the
A/B-R.
I was hoping that you would just catch the infomercial. It's on at 2am
(Spike channel, of course). Or you can come to the 1-10C meeting. Keep
in
mind that according to our chairman, the design is finalized until 2221
Appendix A amendment 1 (by my calculations, 2015).
X2
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Victor Hernandez
Sent: Wednesday, September 01, 2010 1:19 PM
To: [log in to unmask]
Subject: [TN] PCB Indexing Pins / PWB Coupon pins
Importance: High
Fellow TechNetters:
I am searching for an assortment of the above stated pins, not in
large
quantities at this time. We are conducting Thermal Stress on Plated
Through Hole without an expensive tooling machine. I am currently
working with 0.019 thru 0.042 thousand finish hole sizes. I need to
pin
several coupons on one mount. I don't need precisions pin as they are
discarded after use.
Any ideas, comments/suggestions.
Victor,
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