Oh, I didn't write that. I've had that "History" for probably 20 years now, don't 
know who wrote it. In fact, the only place I've ever seen it published was in 
Volt Magazine, and I'd bet very few of you have ever heard of THAT one. 
Hey, is anyone else a member of the ICDA? (International Circuit Designer's 
Association)? now I'm getting nostalgic...

as for your questions:
1) the only CAD file we have ever been asked for is an ASCII database so the 
fabricator could extract IPC-D-356 netlist info (Mentor couldn't export that file 
format until recently) 
2) The manufacturing data should contain everything necessary to fabricate 
the board accurately, I don't know any reason to supply more, unless by "CAD 
data " you mean something like ODB++ format
3) I don't think so. That would be quite a service. Let me know if there is 
anyone who can "reverse engineer" a database from Gerbers. They could make 
quite a good living doing that, I would imagine
4) none that I know of. 

If you have a specific problem you are trying to solve, you might check with 
Router Solutions or someone similar (CAMCAD?) who has a lot of experience 
with translators.

good luck,
Jack


.
On Wed, 10 Nov 2010 11:11:34 -0500, Amol Kane 
<[log in to unmask]> wrote:

>Dear Technetters,
>Hopefully this e-mail with get people going on technet again.
>
>Some brief background before I ask questions. We use Aegis to write our 
process instructions and machine programs and it is infinitely easy working with 
CAD files (not to be confused with Autocad drawings) as compared to digitizing 
Gerber files. CAD files have to contain the Part Number, Package Information, 
Component Reference ID and location coordinates, along with the board 
outline. Gerbers are used for ordering wave pallets, stencils etc. So,
>
>
>1.       How many people specifically ask customers to provide CAD files along 
with Gerber.
>
>2.       What is involved in generation of CAD files (any special software, extra 
steps etc)
>
>3.       Are any of the board houses capable of providing CAD files if the 
customer only gives gerber files
>
>4.       What software can one use to generate CAD files if I have Gerber
>
>Jack,
>How come there was no mention of Tesla in your electricity piece? Very 
hilarious by the way!
>
>
>Thanks!
>Amol
>

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