Franklin,

I have viewed/seen the photo  you have posted. It seems that
the wall condition is not that bad except for the nailheading
& plating condition (thickness) which quite thin which make
the wall condition looks bad.

You can check the following parameters.

     1.) Spindle Feedrate, revolution
     2.) Bit condition (was it new or resharped)
     3.) No of hits for this hole.

Regards
Andrew J. Medina
Quality Control Section
QM Department
Daeduck Phils., Inc.
Tel# : 046-437-0747 loc 293
Fax# : 046-437-0749
Mobile# : +639275312569
E-mail : [log in to unmask]



                    "russell(??)"
                    <[log in to unmask]        To:     [log in to unmask]
                    COM.TW>              cc:
                    Sent by:             Subject:     Re: [TN] Hole wall quality
                    TechNet
                    <[log in to unmask]
                    org>


                    03/30/2004
                    01:12 PM
                    Please
                    respond to
                    "TechNet
                    E-Mail
                    Forum.";
                    Please
                    respond to
                    "russell(??)"






Franklin,

The drill bit after excessive uses can grab the fiber and drag some epoxy
with it, causing roughness.
The roughness will not plate well.
These photos have just that appearance.
QA here has seen this and know what to look for. Less hits per bit could
help.

Larry Russell
www.cwi.com.tw

-----Original Message-----
From: Franklin D Asbell [mailto:[log in to unmask]]
Sent: Tuesday, March 30, 2004 6:46 AM
To: [log in to unmask]
Subject: [TN] Hole wall quality


I've been asked to evaluate some images, hole wall plating defects, and try
to locate the cause.

The information available to me are these are drilled 0.021" holes, they
were drilled one panel up, four panels total, and there was only one 0.021"
tool per spindle. The spindles were new or repoints. Upon evaluating the
bits nothing really jumped out as bad...another image not posted shows
excessive nailheading.

I'm open to any and all comments...as well as a list of items I can begin
checking...thanks

I've posted the images at http://asbell.net/images.htm

Franklin

---------------------------------------------------
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
-----------------------------------------------------