Homebrew PCBs

Hello,

In a previous life I was a copier service tech. Prior to laser 
printers, but as most know now photocopiers use the same process.

We used to have a heck of a time with page registration, and I know 
the truth of Russell's comments below having adjusted many optics 
sets to<wards> 1:1...

So I'm wondering, Has anyone taken the time to see if he or she can 
get a good back to back registration on PAPER?

Because if you can't get the sheet of paper to reliably go through 
twice accurately; isn't it kinda unlikely that the mods to allow a 
board to go through are gonna improve things?

Next, IF it is possible and likely for the registration of two passes 
to line up with respect to the board edges: Has anyone held this up 
to a light and checked if all the holes line up all across the board?

For a eurocard sized board?

Thank you in advance,

Ballendo

P.S. I was really getting gung ho about direct etch resist printing--
even posted awhile back about the CD tray printer I saw at Fry's, and 
was talking to avecia about their resist and soldermask, when...

The above questions popped into my head. For me, if ya can't do two-
sided, it's a no-starter. SMD and SMT are not going away, and they 
require two-sided layouts more often than not (means always<G>)

I truly LOVE the idea. And with a print head on a cnc machine the 
registration problems go away... For others to take their place<G>

But if I'm gonna have to TT the second side anyways...


In Homebrew_PCBs@yahoogroups.com, Russell Shaw <rjshaw@n...> wrote:
> The similar interests are to achieve the *end* result. I'd rather
> see CNC discussions here than boring old laser printer crap which
> i know is inconsistant between models and toner brands anyway.