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Vic,

WOW
2974 members talking about making homebrew boards.

Hate to show my age again but back in early 60's I made my own resist and=
 modified a dipping ink pen! (no not a quill)
I would draw traces on a polished laminate I got somewhere. Then I made s=
ome etchent.
Did a project for telemetering temperature & altitude from a model rocket=
 for my high school science project.
I was just helping my friend who was building the model rocket.
He won first prize I think.
Anyhow I remember building a flip/flop counters using CK722 (I think) bot=
h metal and plastic transistors.
I made etchent (something  Chloride or from my chemistry lab)
Then I drilled boards and soldered parts.
Had to really clean the board with baking soda because I only could get a=
cid core solder.
I did build a heithkit VOM meter years later.

Later I could purchase resist pens, then did 2x or 4x tape on mylar then =
had a photo lithographer ($30)
reduce and make a negative for me.
I would dip a board into UV resist coating, let dry expose to sun with ne=
gative, then slosh in Ferric Chloride, wash in water/baking soda solution=
,
then drill, assemble and solder parts.

Just last week I found in my attic an old 4x hand taped mylar from back i=
n the 70's. Threw it out.

The point is unless you are dirt poor, and/or have all the time in the wo=
rld, why would anyone want to do it the old way?
I have gotten one board done in three weeks from a local pc board house f=
or less than $50

Can't do any complexity.
I can do perfboard with hand wiring faster and better.

Hopefully techniques have improved and cost far less than what I paid.

Ray



On Sun, 09 Jul 2006 21:35:17 -0400, Victor Fraenckel wrote:
>=A0You might get some ideas here:
>
>=A0http://groups.yahoo.com/group/Homebrew_PCBs/
>
>=A0This is a somewhat active group interested in doing PCBs with the
>=A0toner
>=A0transfer method
>
>=A0HTH
>
>=A0Vic





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