"Stefan Trethan" <
stefan_trethan@...> writes:
> Might be better to drill next to the vias and bend the wire over,
> this way the drill won't rip the copper off.
I'll probably bend the wire over anyway, and solder it to the trace.
I've been doing that on my other boards recently and it seems to go
almost as quick as my other via method.
The real problem is that I'm only using a dremel tool, so the runout
in the bit is almost as much as the annulus size!
> Generally i'd rather not push the limits of reliable and practical
> manufacturing so far, if the goal just was a useful PCB. If it's
> also a study into how fine one might go that's another issue.
The goal of this particular board ∗is∗ to push the limits. The
circuit isn't useful at all. If it even works, it just makes a light
blink (er, "throb"). This is a sequel to my soldering challenge
board[1] that uses CSP and sot-535 chips (the last one used tvsop-14
and us-8). The 6/6/13 rules are within the limits of prototype fabs.
Also, if I can figure out my process for 5/5 rules, I know that larger
rules will be reliable.
[1]
http://www.delorie.com/pcb/smd-challenge/