Hi Richard:
The under 4K that you are referring to is the
3E?. I talked with Joe Komus from CAB and he explained to me in detailed
the simple and at the same time effective method their equipment uses.
He said that 90% of their customers uses the groove paneling that is
broken by a pizza cutter type of blade that is not even sharp, no dust
nor smell. Thank you for enlighten me on this matter. No, I did not know
depaneling except the expensive routers that chew up boards and make a
lot of dust and stink. Once again have a great day and you made my day.
Regards,
Ramon
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Stadem, Richard
Sent: Thursday, September 15, 2005 12:19 PM
To: [log in to unmask]
Subject: Re: [TN] Mouse Bites
Ramon,
You may already be aware of this, but panelization using scored lines
and a depaneling machine ($4000 or less from CAB) works much better than
tabs/mousebites. The routing required to get the tabs, and the tiny
holes required to drill the mousebites into the tabs quickly drives up
the cost of the fab pwb.
I even use scored grooves in combination with some milling in order to
avoid the mousebite/tab method of panelization if the pwb has irregular
sides or curves. There are no expensive routers to buy, the skill level
required to depanel is greatly reduced, the cost of the fab is greatly
reduced, and the problems associated with depaneling mousebites is
eliminated (pulled soldermask, damaged boards, etc.). Also, no stress is
placed on the components when the depaneling is done with the CAB
machines, as they separate the pwbs in a lateral direction, as opposed
to the stress applied if the depaneling is done by "breaking" the
assembly out of the panel via the mousebite tabs.
However, I know there are some designs where you cannot depanel any
other way.
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Jerry Dengler
Sent: Thursday, September 15, 2005 1:49 PM
To: [log in to unmask]
Subject: Re: [TN] Mouse Bites
Ramon,
Mouse bites in the middle of the break away tabs are hard on operators
hands after de-panelization.
They may interfere with board mounting.
They look bad on the finished board.
Other than these points they can work fine.
Jerry Dengler
Production Manager
Pergamon Corporation
PH: 610-239-0721
Fax: 610-239-0720
-----Original Message-----
From: TechNet [mailto:[log in to unmask]] On Behalf Of Dehoyos, Ramon
Sent: Thursday, September 15, 2005 2:37 PM
To: [log in to unmask]
Subject: [TN] Mouse Bites
Hi Technetters:
Panelized boards are connected through mouse bites to the break
away tabs. It is my understanding and I see the reason for the mouse
bites to be close to the board. Does anybody out there have experience
with mouse bites placed in the middle, between the boards and the tabs,
or close to the break away tab? The material used is FR4.
Regards,
Ramon
Note: On a post a few weeks ago about dry boards. I found out
that there are two types of dry board markers regular and low odor
markers and two types of dry boards. Low odor markers are the new type
available and stay on the old type of dry boards( hard to erase). The
new type of boards are sleeker. The solution I found out was to go to
Home Depot and buy a 4' X 8' dry board sheet for $9.95 and replace the
old board with the new by using the old frame and it works.
---------------------------------------------------
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
847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------
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
847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------
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
847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------
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
847-615-7100 ext.2815
-----------------------------------------------------
---------------------------------------------------
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 847-615-7100 ext.2815
-----------------------------------------------------
|
