On Sun, 29 Apr 2007 21:08:06 +0200, DJ Delorie <
dj@...> wrote:
>
> I recently did a double sided board. Since I usually post-process my
> cad files to include a border around the board (to hold the TT paper
> down), I simply put a via in each corner of the border, with a 13 mil
> hole in it. This is the size of my smallest drill bit. I pre-drilled
> the blank pcb for those holes, and poked holes in the TT for those
> also. I used the drill bits themselves to align the TT with the PCB,
> then taped it down. I was off by less than 10 mil. Not sure what
> I'll try next. Another option is to do two single sided boards and
> glue them back to back after etching.
leave one side of the paper longer so you can pinch the two sheets
together while you insert the board between them (after aligning against a
light). Use a folded carrier sheet (thin cardboard) to put them through
the fuser.
The registration isn't great, but it's quick and OK for smaller boards.
ST