pcb milling question

[NickLatech]

I did a search and found out fr-3 is the recommended board, but who sells this fr-3 type boards?

Is anyone doing double sided boards using the engraving method?

I'm thinking about going single since it would be easier to start out with.

I found some single sided boards on digikey, but I'm not sure what is a good choice on width, material, or type.

http://www.digikey.com/scripts/DkSea...S&Cat=32375757

Thanks for the help.

Nick

[canalcop]

The standard PCB laminate is FR4 1.6mm. If you intend to mill out the tracks then you do not need the copper coated with photo-resist
For higher currents you can use a thicker copper laminate but these are more expensive and take longer to etch. Soldering some wire to the track works just as well
Cheaper PCBs pased on a paper glass mix are also available and are easier to drill eg CEM/1. While not as strong as FR4 they are easier on machine tools and drills and can also be punched.
When drilling it is helpful to use a backing sheet of Alu foil coated SRBP board
for the drill exit this helps prevent drill breakage
For supplies you could try the us rep for Mega

http://www.megauk.com/cgi-bin/mega/l...ww.megauk.com/
http://www.vpcinc.com/Products/pcb.htm

If you are interested in some background on commercial manufacture look here
http://www.personal.dundee.ac.uk/~gjzcallo/