Homebrew PCBs

Hi folks!

I am new to the group.  I very much want to use a milling machine 
approach to mechanically mill my circuits. I like the idea of being 
able to (perhaps) build part of a circuit...and then be able to add 
to it later.  Something completely impossible with any technique 
that relies upon chemical milling. So, I find myself trying to build 
a little cnc mill.  (I mean little. 3"x4"x3" of travel - the size of 
my linear slides...taken from a Reticon camera scan platform. I have 
some beautiful 12" ballscrews which will be sadly under-utilized 
driving it...:-)

Anyway, as you can imagine...I find I need to produce three 
identical PCBs for the three servo motor controllers.  So, I have a 
circuit laid out...but I find I cannot seem to get the Toner 
Transfer process to work.  I have tried all the recommended papers 
(i.e. Magazine paper, Staples "Picture Paper", etc...to no avail.)

Finally, thinking I would try a photographic method, I got my hands 
on some viewgraph transparencies.  I intended to make a "positive" 
for a contact photographic process.

But then I thought.  What the heck. I will try a Toner Transfer with 
the plastic viewgraph transparencies.  Lo and Behold!  It actually 
worked. 

In fact, I transferred so much toner...it was even smearing.  It 
seems to want LESS heat and pressure. 

I think I like this method (it isn't perfect, yet...but it's the 
most ink-on-copper that I have seen!)

A few things to note:

1. I printed on the "smooth" side of the transparencies...figuring I 
didn't WANT the toner to stick too well.
2. I used an iron on high heat.  This seemed to be too high. The 
toner was melted onto the copper in seconds. In fact, in areas it 
started to smear...probably from the combination of too much heat 
and my pressing down on it too hard. I will try a lower setting on 
the iron...and less pressure.
3. Clean-up is easy.  You peel it off like a giant piece of scotch 
tape. Hey, is this like dry Press-n-Peel?  :-) 

Anyone else have any good experiences with this method? Any hints?  
I didn't see this mentioned in the group...

Excuse the long post. It's my first. 

Jim