Problem with Using cura for PCB slicing

[hamodeh21 0]

I'm using Cura to slice an STL File with PCB traces. Everything is working well except that close traces are being connected together in the resulting gcode. Attached is a picture of a test board, you see none of the traces are connected together which is fine, but in the resulting gcode, the traces are connected together. I have combing off, retraction enabled, z hop when retracted also enabled with a z hop height of 1 mm.

 

I checked the gcode and found that there's no Z hopping between these points. Any help please? 

Thanks

[tinkergnome 927]

3 hours ago, hamodeh21 said:

I have combing off, retraction enabled, z hop when retracted also enabled with a z hop height of 1 mm.

 

What's the value of "Retraction Minimum Travel"?

 

[hamodeh21 0]

it was set to 1.5mm, reduced it to 0.4mm and I got retractions where it shouldn't retract, set it to 0.6mm and now it works. I guess I need to tune this for different circuits. Thanks mate appreciate it :).

 

Also, is there a way to force it to draw each trace only once? for example, it went over every line twice. Can I get it to draw the line only once? I have my trace width at 0.4mm and the wall thickness is set to 0.4mm.

[tinkergnome 927]

13 hours ago, hamodeh21 said:

it went over every line twice. Can I get it to draw the line only once?

 

I'm not sure, i think that's simply how the CuraEngine lays down the paths.

If it's possible at all, the "print thin walls" feature may influence this (dunno 🤷‍♂️).