Re: gEDA-user: furnace controller follow-up

[DJ Delorie <dj@xxxxxxxxxxx>]

> Um, I don't think 6 mil space/6 mil trace is fine enough to
> successfully use on 1mm pitch BGA.  Theory tells me 6 mil space and
> 5 mil trace rules (or vice versa) are the minimum.  It's hard to
> find modern parts (e.g., Xscale-class cpu, or a mid-size FPGA) that
> is not in a BGA.

http://myropcb.com/pcbfab.htm

5/5 rules, 4L+m/s up to 30sq, $160 for 4 boards.  6L+m/s is $292/4.

They're the only ones in my chart finer than 6/6.

Canadian company using Chinese manufacturers.