You drill before etching?
I do it this order:
For two sides copper and two sides legend:
Print all 4 views, cut out.
Align copper views against light, hold together, place in folded
cardboard, slide in PCB, run through fuser. (turn over and run again, note
that the folded cardboard is the secret to keep alignment.)
Remove paper, etch, rinse, scrape off toner.
Do the same as above with legend, only use silicone paper which peels
easily to leave a black legend (I still have coverage/pinholes problems
with the silicone paper, so i only use it for legend. But for etching the
grey paper residue bothers nobody ;-) )
If i only make single-sided i like to do the copper bottom and top legend
in one go, but sometimes i only have doublesided material so i will
transfer the legend after etching, like with 2-sided.
I'm not entirely sure if i understood your instructions.
I also use TT to make transfers to aluminum panels and stuff.
ST
On Wed, 16 Nov 2005 23:13:11 +0100, Mike Young <
mikewhy@...>
wrote:
>
>
> -- Print the drill guide and legend. Stick it to the board with spray
> mount
>
> adhesive.
>
>
> -- Drill and debur the board. There are three unconnected vias in the
> board
>
> corners for alignment pins.
>
>
> -- Pierce the alignment vias on the top artwork; place the pins in the
>
> board; place the top artwork over the pins. Visually confirm alignment,
> and
>
> tape in place. Black toner should occlude all holes.
>
>
> -- Remove the pins. Tear off a suitable size scrap of bond paper to use
> as
>
> slip sheet. Fold in half; place the board with top artwork in the crease.
>
> Run it through the laminator.
>
>
> -- Soak off the transfer paper. Pulsar's paper comes off cleanly in a few
>
> seconds. Dry the board. Examine for alignment errors and incomplete
> traces.
>
>
> -- Cut a piece of green sealer paper to size; laminate to the exposed
> toner.
>
>
> -- Repeat for the bottom. The sealer prevents the completed top artwork
> from
>
> sticking to the slip sheet.
>
>
> -- Etch.