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

hey that Printer should smell nice with Talc !!

last week I was searching for Pascalite for programing and some interesting results turned up, needless to say I got diverted but a few minerals rose to the top of the search ... Calcium, Bentonite, Illite, Pascalite, and another one but cant remember the name right now.
Some use's are for facial mask's and medicinal purposes etc and reading all about this stuff it appears to be widely used, so I figured I would search for "Illite Copy paper", the Glossy Paper mentions the use of Illite,
I was wondering if these are the sorts of clays used are what make the TT process a success or not ?? and could be part of the key to the puzzle ??

I have used Bentonite as a binder in Green Sand for casting, so anyone looking to experiment with could try the local Foundry for a possible source.

Thomas





In one of my earlier posts,
I originaly said that I use "Free" glossy Advertising Magazine covers
and as an "option" and added talcum powder(corn starch) to the
surface.

UPDATE: As it Turns Out the "option" of talcum powder is what made it
work well. on almost any paper. (you can also use fine clay powder)
I even used Plane copier paper with the talc. The "Glossier"
surfaces just allowed me to get finer lines. about 3~4X of the DPI of
the Printer. An Added bonus of Using Talc, it absorbs Water Like
crazy durring soaking process.

Process
1. sprinkle talcim powder on the paper (the glossier the better)
2. wipe as much off with a dry cloth (Critical to minimize the talcum
powder residual in the printer, do not use wet cloth. it will ruin
the paper.
3. print
4. Transfer to PCB (laminate or Iron on)
5. soak with warm water or "window cleaner"
6. Remove, dry and etch.

NOTE: the Talcom powder or corn starch may get all over the inside of
your printer thats why I recommend wiping as much off the paper to
leave the thinnest coat. You can also clear most of the Talc back out
of the print drun and fuser surface by printing an "all black" sheet(
use plane copier paper with no Talc).

BoonS

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