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--- In ModularSynthPanels@yahoogroups.com, Suit & Tie Guy <erwill@...> wrote:
>
> On Dec 20, 2008, at 3:39 PM, thomas white wrote:
> > 2oz copper - does if make any electrical difference in
> > sound? Does it last longer?
>
> it makes not a significant difference in sound or longetivity that
> i'm aware of.
>
> however i makes a huge impact on the reworkability. i've been using 2
> oz copper process for 2.5 years now and have only lifted a trace once
> through rework. fyi: that module never shipped.
>
> the supplier i work with charges only a few pennies extra per board
> for 2 oz process. they are speedypcb.com, and are a broker for a
> chinese firm from the shipping cost and packing list that comes with
> the boards.
>
> > tin/lead finish - Have you had a problem with the RoHS
> > compliant finish before?
>
> the problem is twofold. first i'm assuming some of the difficulty i'm
> having in soldering this comfortably has to do with the low trace
> weight. another is the lead-free finish. the other issue i have
> stuffing this PCB is the extremely small solder pads. i'm really not
> sure what is the biggest issue is, but i'm interested. the low trace
> weight should make "taking" the solder easier, however it makes me
> nervous to work with because i worry about damaging the board while
> soldering.
>
> i'm using a Weller WES51 with a ETH tip at 750 degrees farenheit. i
> moved to this tip because of the smallish pads on an early PCB which
> were corrected, and it's still large enough to make me freak out
> about how long it takes for this board to flow solder ... i worry
> about damaging the soldermask when i'm working with this board. i'm
> also open to criticism of my solder technique. i could just be a Mr
> Complainey Pants as i seem to be the only person whining.
> ---
> Suit & Tie Guy
> suitandtieguy.com
> stgsoundlabs.com
>