PCB CNC: Unterschied zwischen den Versionen

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You can still use the autorouter, however I would recommend it only on the bottom layer. I use a 12.5 mil routing grid usually, and * for bottom N/A for top.

Then I move the wires around, so that the sidewards distance is maximized. This is done my making complete diagonals, and successively moving outer wires further outside.

[[Datei:brdgoodpad.png|800 px|Example of good (not really, but sufficient) and bad wire placement". It is not a very good example, I will try to produce if there is time]]

=== Mounting Holes ===

Currently PCB2Gcode does not respect mounting holes, meaning that it would grow the wires possibly in a way that two different signals could be short-circuited by the screw. To prevent this, place a bottom wire-arc around the screw. Then it gets it's own "pad".

=== Isolation Distances ===

If you happen to work with larger voltages, you need isolated gaps on the PCB. I would do that by drawing a filled polygon on the bottom layer, or a group of overlapping or conntected wires, as if the isolation were a wire.

After the milling, I would use a sharp knive to lift the copper from the board at a corner, and peel it off. If you know the trick, it works quite well.

[[Datei:peeledpcb.png|600 px|A peeled off PCB. Ok that not for isolation. You see here that I needed to peel off multiple areas. If I had connected the individual regions with overlapping wires, I could have saved some time.]]

==Links==