Homebrew PCBs

I'm about to try some TT stuff.  I'm not ready to etch, yet, but I
want to play with TT some to get the transfer right.  I printed out a
design with 6 mil lines and spacing using an HP1200, and it looks
great on paper (like so many other things <G>).  Do the lines widen
when you transfer?  Or is there something with the etching that limits
the minimum width?
Thanks
Richard
--- In Homebrew_PCBs@yahoogroups.com, Stefan Trethan
<stefan_trethan@g...> wrote:
> Hi,
> 
> 
> I bought a few ICs at ebay, very cheap, but some have tqfp case....
> 
> the pin to pin spacing is 20mil i believe, it are 100 pins.
> 
> Do you think this is possible with TT?
> 
> It are xilinx cplds..
> 
> I have some with 160pins (xc95216) but they have a wider spacing, they 
> don't trouble
> me much but the 20 mil is really a bit low.....
<snip>
> ST
<snip>