My experience has been a little different.
It seems more like if Double Sided is 100% than 4-layer is 200%, 6-layer
is 300%, 8-layer is 400%, etc.
FNK
> ----------
> From:         Mauricio Castro[SMTP:[log in to unmask]]
> Reply To:     TechNet E-Mail Forum.;[log in to unmask]
> Sent:         Tuesday, May 26, 1998 7:12 AM
> To:   [log in to unmask]
> Subject:      Re: [TN] No. of layers Vs Cost
>
>      The general rule of thumb is: if Double Sided is 100%, 4 layers
> will be 50%
>      more, 6 layers 25% more, 8 layers 12.5%, etc.
>
>      Example: if Double Sided PCB costs $1.00, 4 layers (same size)
> will cost
> $1.50, 6 layers $1.875, 8 layers $2.08125, etc, etc.
>
>      This rule can be applied to standard PCB's and gives you an idea
> of costs.
>
>
>                                         Mauricio Castro
>                                         Molex de Mexico
>
>
> ______________________________ Reply Separator
> _________________________________
> Subject: [TN] No. of layers Vs Cost
> Author:  "Gagrani; Kishore" <[log in to unmask]> at
> INTERNET
> Date:    26/5/98 9:25 AM
>
>
> I understand that more no. of layers would increase the cost of PCB,
> but how is this function related ? Is there any formula (certainly
>      will have many no. of variables) which can be applied to figure
> this out ?
>
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