AW: PCB making tips

[Haible Juergen]

	>I'll reproduce here the biggest tip of all in making PCB's - make
	>yourself a drill microscope. Drilling is by far worse than imaging
and
	>etching.

I have a different method, which also works extremely well.

Use a layout program that doesn't fill the "eyes" where the
holes will be, i.e. the copper must be etched away where the
drill will go thru. This will give a perfect guide for the drill, and
no drill press or microscope is needed. Drill free hand with
one of these little machines that are significantly smaller
than a dremel. With this method I can produce approximately
one hole per second - I think it's rather fast. Of course there has to
be a little rest every 20 or 30 holes, to let the machine cool down,
and to relax your wrist, so in the end its rather 30 holes per minute.
Still not bad, I think. For this method it's important that you use
the cheap pcb material, not the more expensive and much harder 
epoxy. With the cheap pcb material, you can use cheap drills
(no hard metal).

JH.