Thanks very much for this help. One big problem is finding a way to move
the images around so that they print at different places on the page. I
don't have any software that will take a PDF image and let me place it at a
specific place on the page. I would also like to be able to combine several
of the PDF files together, namely the top layer, the bottom layer, the
silkscreen and others on the same page. Do you know of a piece of software
that will let me do this? Either that or one that will let me convert the
images to a different format so that I can manipulate them. How do you
handle these problems? What software do you use to generate your layouts in
the first place?
_____
From:
Homebrew_PCBs@yahoogroups.com [mailto:
Homebrew_PCBs@yahoogroups.com]
On Behalf Of Herbert E. Plett
Sent: Tuesday, May 02, 2006 3:43 PM
To:
Homebrew_PCBs@yahoogroups.comSubject: RE: [Homebrew_PCBs] Toner Transfer Methodology
--- Mark Mickelsen <
mark.mickelsen@...> wrote:
> I'm new at this and I may be doing it all wrong. I have my PCB software
> generate the layout as a PDF file so I can print it out on my laser
printer.
very important: make absolutely sure the scale factor is right, or the holes
and pads will not match!
> Is there a better format that I should be using for the printout? Also,
the
> top layer, bottom layer, silkscreen, and other things all come out as
> separate files. I would like to be able to combine them all on a single
> sheet of photo paper for printout. Does anyone know of a piece of
software
> that will let me combine the files together into a single file for
printout?
> My boards are small enough that all these different things will fit on a
> single 8 1/2" x 11" sheet of photo paper and it would be nice to not have
to
> print out several sheets for just one small board. Or am I just going
about
> this the wrong way in the first place?
sure:
don't print directly on the expensive paper. use standard heavy paper first
to
get a draft. then cut a rectangle of your 'expensive' paper some 1/4 to 1/2"
larger than the net picture and tape (paper masking tape) it just over this
first image, coated face up.
overlap only 1/8" or less of the tape on the borders, both leading and
trailing, never the sides. best use 4 x 1/4" strips, one each corner.
re-run the print on this patched sheet (manual feed), this time with the
heaviest resolution/toner setting you have.
remove carefully the tape if you want to reuse the draft, and don't touch
the
surface.
you may even use 'spoiled' or 'failed' photographs you previously got from
the
jetink printer. it's funny to see circuits printed on top of those
mis-coloured
smiling faces... but TT is insensitive to previous ink printing unless you
damage the coating with fingerprints!
> Some help from the more experienced players would be greatly appreciated.
> Thank you.
> Mark
remember to print each circuit on a different place of the sheet, so you
ensure
to minimize the chance of damaging your printers drum. don't _center_ the
pictures.
use the best (most appropriate) paper YOU can find. don't search for
'exactly'
what others have used!
the most important criteria is the quality of transfer obtained: how much
black
lines or spots remain on paper after removal (if any=bad), ease of removing
in
water (rubbing=bad, float off=ideal) and residues left (none=ideal). if a
test
fails, try again, then use the remaining paper (you only 'lost' half a
sheet)
for colour photographs and go buy another paper! loop until you succeed!
for your first try, tear out a page of that expensive shiny fashion
catalog...
many of those glossy papers do work, mainly those that stick together when
getting wet.
Try this: dip the catalog in water, squeeze and let dry. if you cannot open
it
again, then that 'was' the right paper type!
happy TTing
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