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Automatically generated traces between PTH and pour, how can I make them bigger?

Former Member

I am concerned that the traces that are automatically generated between plated through holes and a ground pour are too thin.  Say I have two plated through holes to connect to the positive and negative supply from a battery. I can choose a 50mil trace from the positive, but I have no control over the size of those tiny little traces generated with the ground pour. If the pour surrounds the PTH it is connected by four little traces, but if the pour only borders one side of the PTH you only get one tiny little trace.  Can you use the wire tool to draw a 50mil trace from a PTH into the pour or will the software freak out when the gerbers are generated?

 

What size are those little traces anyway, and how many amps can they carry? Where can I adjust their size?

 

Cheers all. Matt.

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    Me again.

     

    I have discovered that you can un-check the thermals box in the wire/polygon properties but that makes every PTH solid to ground.  I want thermals on all the GND PTH except for two which carry large current.  I would fill in the gaps with the wire tool and paint in some copper in the top layer but I have read that manufactureres dont like that.  Is that true?

     

    cheers again.

  • 0 in reply to Former Member

    On 08.06.2015 07:12, Matthew Findlow wrote:

    Me again.

     

    I have discovered that you can un-check the thermals box in the

    wire/polygon properties but that makes every PTH solid to ground.  I

    want thermals on all the GND PTH except for two which carry large

    current.  I would fill in the gaps with the wire tool and paint in some

    copper in the top layer but I have read that manufactureres dont like

    that.  Is that true?

     

    For pads, you can turn on/off thermals individually (goto properties,

    find the checkbox). I use non thermal pads for mounting holes thats

    going to be connected to gnd/shield.

     

    So the solution could be to make those special holes as a component. Its

    sounds like the right thing to do if we're talking about battery terminals.

     

     

     

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  • 0 in reply to Former Member

    On 08.06.2015 07:12, Matthew Findlow wrote:

    Me again.

     

    I have discovered that you can un-check the thermals box in the

    wire/polygon properties but that makes every PTH solid to ground.  I

    want thermals on all the GND PTH except for two which carry large

    current.  I would fill in the gaps with the wire tool and paint in some

    copper in the top layer but I have read that manufactureres dont like

    that.  Is that true?

     

    For pads, you can turn on/off thermals individually (goto properties,

    find the checkbox). I use non thermal pads for mounting holes thats

    going to be connected to gnd/shield.

     

    So the solution could be to make those special holes as a component. Its

    sounds like the right thing to do if we're talking about battery terminals.

     

     

     

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