Homebrew PCBs

On Fri, 20 Feb 2009, jerrytr2.com wrote:

>    One part I scrounged is the same package as the 24FJ256GB106
> processor I'm planning to use - a 64-pin TQFP.  Good LORD those pins
> are small.  Can Toner Transfer make boards this tight? According to
> the spec sheet, the pin pitch is .5mm, or about 20 thousandths of an
> inch.  So the traces need to be 10 thousandths of an inch, and will
> only have 10 thousandths of separation.  Ouch.

10/10 is not too difficult, one of my first toner transfer PCBs were
10/10. I've since got down to 8/8 (for 0.4mm pitch LQFP).

I find hot air and solder paste does the easiest/neatest job when
soldering SMD.