Danilo Uccelli wrote:
> I think that a poscript model can be a little best, because you can use it
> on Linux as well on Windows.

PCL or such (i.e., a properly documented language, not GDI) often
actually works better, because your PC will be a lot faster than the
processor in the printer. There can be quality issues with grayscale
prints (photos and the like), but for layouts, that's not a problem.

Print engine and a nice linear paper transport are much more
important, I agree.

> An other remark, do you think is today still economic to make the prints by
> self?

You can't beat turnaround times of self-made boards. With toner
transfer, it takes only about an hour between finishing the layout
and having the etched, cut, and drilled board in your hands. Also,
with SMT, it can actually get quite difficult to fill a 160x100
mm^2 board, or even two of them :-)

The main issues with self-made boards are the lack of through-hole
plating and the lack of tinning. The latter is mainly annoying if
using a toaster oven, as the traces will oxidize. The through-hole
plating complicates and slows soldering of boards with vias and
pins that connect on both sides, and it also requires special
considerations when making the layout.

Total material and tools wear cost should be about USD 12 for
200x160 mm^2. (PCB material, transfer paper, and the acid are
about USD 10, assuming average efficiency and local prices (which
tend to be relatively high). You also need small quantities of
acetone, alcohol, steel wool, toner, regular paper, and paper
towels, plus there is wear of cut-off disc, drill bits, drill, and
printer.)

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, Buenos Aires, Argentina     [EMAIL PROTECTED] /
/_http://www.almesberger.net/____________________________________________/


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