Hey Jack,
I have a condensed version of DOD-D-1000 that says:
"10.4.2 STANDARD TOLERANCES - Dimensions shown without tolerance are
controlled by the standard tolerances in the title block..."
Sounds to me like your vendor owes you one.
Hope it helps
FNK

Frank N Kimmey C.I.D.
EM Designer
C & K Systems, Inc.
916-353-5366
[log in to unmask]

> ----------
> From:         Jack Olson[SMTP:[log in to unmask]]
> Reply To:     DesignerCouncil E-Mail Forum.;Jack Olson
> Sent:         Thursday, February 18, 1999 7:55 AM
> To:   [log in to unmask]
> Subject:      Re: [DC] PCB thickness & tolerance
>
> Thank you for answering this... At least I know I'm not losing my mind
> trying to find it in IPC, (I'd rather lose my mind for other reasons,
> eh?)
>
> The problem was that the vendor says its not their fault if the board
> came
> in too thick, because the callout was ".093 nominal" with no tolerance
> callout. I say if there is no callout then they have to use the one in
> the
> title block "all three-place dimensions shall be .xxx unless otherwise
> noted", right?
>
> Anyway, thanks for all the responses....!
>
> Jack
>
>                 -----Original Message-----
>                 From:   Cosentino, A. T. (Tony)
> [mailto:[log in to unmask]]
>                 Sent:   Thursday, February 18, 1999 5:56 AM
>                 To:     [log in to unmask]
>                 Subject:        Re: PCB thickness & tolerance
>
>                 Jack,
>                 The old MIL-STD-275 had a design guideline which
> stated
> +/-10% or 7mils
>                 whichever is greater. IPC-D-275 and  IPC-2221, which
> are
> both design
>                 standards, do not specifically call out board
> thickness
> tolerances nor
>                 do they publish any guidelines. I would stick with the
> +/-10% rule for
>                 anything 70 mils or greater and +/-7mils for all other
> boards unless you
>                 have a specific application which requires a
> controlled
> thickness under
>                 these limits. I would then work closing with a board
> vendor
> to achieve
>                 my desired results.
>                 Anthony T. Cosentino
>                 Lockheed Martin
>                 (703)367-1144
>                 [log in to unmask]
>
>
>
> ################################################################
> DesignerCouncil E-Mail Forum provided as a free service by IPC using
> LISTSERV 1.8c
> ################################################################
> To subscribe/unsubscribe, send a message to [log in to unmask] with
> following text in the body:
> To subscribe:   SUBSCRIBE DesignerCouncil <your full name>
> To unsubscribe:   SIGNOFF DesignerCouncil
> ################################################################
> Please visit IPC's web site (http://www.ipc.org) "On-Line Services"
> section for additional information.
> For technical support contact Hugo Scaramuzza at [log in to unmask] or
> 847-509-9700 ext.312
> ################################################################
>

################################################################
DesignerCouncil E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE DesignerCouncil <your full name>
To unsubscribe:   SIGNOFF DesignerCouncil 
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################