[PCB_FORUM] Re: Tooling holes

Good feedback guys. Thanks. Routing the boards out of the panel came up, but I was not sure how they handled that. Either panel fiducials or like you said Frank...tape. Not a plated hole because too sloppy tolerance with plating / solder?
Sounds like NP tooling holes are a "nice option" for NC drill at fab, but not necessity. 
Also, for a dimension datum...no advantage NP to plated datum.


Thanks again, Bill and Frank.
Mark

FrankW wrote:
No. what I'm thinking is when the individual boards have to be "routed" out of the pcb fabricator's mfg panels. If there isn't any tooling holes supplied, they (PCB Fab people) either add them (if allowed) or have to secure the pcb on the routing machine bed another way such as 2 sided tape. (this applies to both individual boards and/or customer panels) I happen to have worked at a fab facility for awhile. I really can't think of another way 
of routing out the boards from the fab panel.

Bill Dempsey wrote:

Ummm....I have witness the fabrication of numerous panels and have NEVER
seen a FABRICATOR use customer tooling holes.
The artwork is located by the fabricators own tooling holes.
ASSEMBLERS use customer tooling holes, is that what you were thinking?

-----Original Message-----
From: icu-pcb-forum-bounce@xxxxxxxxxxxxx
[mailto:icu-pcb-forum-bounce@xxxxxxxxxxxxx] On Behalf Of FrankW
Sent: Tuesday, March 24, 2009 11:45 AM
To: icu-pcb-forum@xxxxxxxxxxxxx
Subject: [PCB_FORUM] Re: Tooling holes

Bill Dempsey wrote:
1) Fabricators do NOT use your PCB tooling holes as their tooling holes.
Actually Bill they do use the on-board .125 tooling holes In Fact they hope the customer provides them. If not they may ask if they can insert a couple. This is mainly for routing the board out of their mfg panel. If no tooling holes are available, they then have to secure the PCB using double 
sided tape or similar.
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