TECHNET Archives

April 2002

TechNet@IPC.ORG

Options: Use Monospaced Font
Show HTML Part by Default
Show All Mail Headers

Message: [<< First] [< Prev] [Next >] [Last >>]
Topic: [<< First] [< Prev] [Next >] [Last >>]
Author: [<< First] [< Prev] [Next >] [Last >>]

Print Reply
Subject:
From:
Reply To:
TechNet E-Mail Forum.
Date:
Mon, 15 Apr 2002 21:06:42 EDT
Content-Type:
multipart/alternative
Parts/Attachments:
text/plain (1184 bytes) , text/html (1446 bytes)
Hey Earl,

I suppose that's fool-proof, but in reality, how many CM's have routers? When
I worked at a memory company, we did...all we did was SIMM's mostly, but that
was our market. At other CM's that I worked at, a router would be a strange
piece of equipment on the floor, and hard to justify.

Tab/route spec's with a "mouse bite" lessens the stress a bit, but again is
not fool-proof...and doesn't leave the smooth edge that people like (without
some extra sanding, or filing), and adds more cost to the fab (by the linear
inch for the route, and the extra holes for the mouse-bite, compared to a
straight-line score. Jump scoring is even better, makes the individual board
separate very easily, and still stay together during assembly...not many have
the machines to do that yet...boo-hoo!)

Is there not a scoring spec, and some design rules that can prevent problems?
I think there are...getting people to follow them is another story however...

-Steve "exacto-knife" Gregory-


> Specify all the 1/3 or whatever but don't use cookey cutters on my MLB's no
> mater the materials or constructions. You get what you ask and it usually
> is
> cracked something. Specify routing after assembly.
>
> MoonMan
>



ATOM RSS1 RSS2