[PCB_FORUM] Re: AMC 's breakoff tabs or vcuts?
- From: Jim Goshorn <jgoshorn@xxxxxxx>
- To: icu-pcb-forum@xxxxxxxxxxxxx
- Date: Fri, 03 Nov 2006 08:24:53 -0600
Hi Sam,
Tabs and scoring their both a pain in the rear. Scoring has a tendency to
leave a rough finish on the edge
of the board and if this card is going into a rack type product with slide
rails it may not be desirable. Also
the final break point may have a larger tolerance than you can afford, and
not to forget your manufacturing people
may want to pick up a Pizza cutter to separate your boards.
On the other hand, the break away tab that you are using looks like it
should work OK but only time will tell.
I have tried something like it in the past and had fair success. Although
sometimes you may get a rough finish to the outside
of the board outline.
There are tabs that break to the inside of the outline but they have to
be in the board from day one, they suck up
placement and routing area but they do leave a clean board edge.
Good Luck, Jim
deac48a.jpg
At 05:34 PM 11/2/2006 -0600, you wrote:
Hi all,
On our AMC s we are having a concern with our breakoff tabs and the rails
to plug the board.
Here is the kind of breakoff we are using with 40mils and 20 mils diameter
drills:
Have you got any suggestion of vcut or breakoff to make the edge of the
board better?
Thanks
image00170.jpg
Samuel CAIS Interphase Corporation
CAD PCB Designer 2901 N. Dallas Parkway #200
cais@xxxxxxxxxx Plano, TX 75093
214.654.5337
<www.Interphase.htm>www.Interphase.com
Jim Goshorn
MCL, Inc
501 S Woodcreek Rd
Bolingbrook, IL 60440
630-771-7205
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