Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Quick update about the "Tabajara Toner Transfer"® Method:

- It works best with couche paper WHITE and a higher "gramatura"
(weight? Higher thickness) than "Time magazine paper".
- The best toner to be transfered is that one that you passes your
finger thru the paper printed, and you can FEEL the tracks
- Using ferric perchorate (?), it ONLY works OK if you make the
temperature of the substance higher. I took an old soldering iron, put it
inside a glass testing tube filled with sand, and hotted the bath (wow, my
english today is worse than ever, I must be sleeping yet!). I did the best
board I did in my life EVER. Way better than many fabs in Brazil
- To deattach the couche paper, you must put the board 10 or 15 minutes
into a water bath. Maybe caustic soda or soap can help, but after 10
minutes, you deattach the TOP paper cover. The rest you take out rubbing
your finger.
- The last and MORE IMPORTANT STEP is to take a toothbrush, brush it in
soap, and after brush the ENTIRE board to take out ALL the paper residues.
If you miss this step, you'll have problems corroding some fine tracks.

The board got SO good, but SO GOOD, that I could pass two traces between
two IC pins. Believe it or not. I hope to post some photos tonight.

Sorry for the bad english, I didn't slept well, and I'm in my work, busy
as hell. Just remembered to update the story here, and prepare you for the
best TTT® boards ever made heheheehe :o)\

Greetings from Brazil
Alexandre Souza


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