Homebrew PCBs

I'm starting to get good results out of this stuff. Here's a TQFP
adapter board I made for an ATMega48.

http://s155.photobucket.com/albums/s282/sawasdee_che/Electronics/?action=view¤t=TQFP32_A.jpg
http://s155.photobucket.com/albums/s282/sawasdee_che/Electronics/?action=view¤t=TQFP32_B.jpg
http://s155.photobucket.com/albums/s282/sawasdee_che/Electronics/?action=view¤t=TQFP32_C.jpg
http://s155.photobucket.com/albums/s282/sawasdee_che/Electronics/?action=view¤t=TQFP32_D.jpg

Soldering that chip was surprisingly easy, once I got it aligned and
two pins soldered in place it the rest was a breeze.
I used acrylic paint as a solder mask, actually I painted it after
soldering, just to keep the traces from rusting.

I'm printing the masks on inkjet tranparency paper, but I'm having
problems with that because when the ink dryes it craks leaving very
thin lines, in fact I'm surprised that such thin lines remain after
etching. So I have to use a marker to cover the cracks, but still some
remained on the mask and that's what causes those little spikes along
the traces.

I also made a little test of the film as solder mask on a bare PCB,
seems to take the heat quite well. Now I should see if it adheres in
between traces and to the PCB substrate of an etched board.