Probably depends somewhat on who you go to.  But, I presented the same
question last week to a major US board manufacturer and was told, minimum, 5
and 5 on the outer layers, and 4 and 4 on the inner layers as standard
pricing.

Tom Hybiske
General Atronics Corporation
Wyndmoor, PA


>> I was curious if someone knows how narrow of a trace can I
> go until it affects board costs? I have been using 8 mil as a rule.
>
> Thanks
>
>
> Mark Mainland
> PCB Designer
> Cherry Electrical Products
> 11200 - 88th Ave.
> PO Box 581913
> Pleasant Prairie, WI 53158
> Ph. 262.942.6659
> Page. 888.819.0198
> Fx. 262-942-6334
>