Drill hole clearance

Question

I have designed an land pattern for a micro USB connector. The connector have 2 x 0.9mm drill holes under it.

The problem is the clearance distance around these holes being to big and overlaps the soldering pads for the very same connector.

These holes are just plain holes, I don't need the same clearance rules as for traces. Is there a way to override the automatic clearance and set them manually?

Former Member · Accepted Answer

Max Kielland wrote:

I have designed an land pattern for a micro USB connector. The
connector have 2 x 0.9mm drill holes under it. Image:USBConnector.png
The problem is the clearance distance around these holes being to big
and overlaps the soldering pads for the very same connector.
These holes are just plain holes, I don't need the same clearance
rules as for traces. Is there a way to override the automatic
clearance and set them manually?

The copper clearance from holes and the edge of your board is set in the

DRC. (DRC>Distance>Copper/Dimension)You can reduce this to zero and the

copper will fill right up to the lines marked in the Dimension layer.

Then you need to check and address the issues that arise from this.

The copper will be allowed right to the edge of the board which is not good

practice so place a tRestrict bRestrict wires here to constrain the pour.

The second thing you need to check is the solder stop top and bottom around

the hole and the board edges. Milling and plain hole drilling is the last

stage and keeping solder stop away from the cutter prevents chipping.

HTH

Warren

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