# Laser cutting from SVG gives me a double line

**URL:** <https://forum.snapmaker.com/t/laser-cutting-from-svg-gives-me-a-double-line/8601>\
**Category:** Snapmaker 2.0 (3-in-1)\
**Created:** [August 24, 2020, 12:16am UTC](https://forum.snapmaker.com/t/laser-cutting-from-svg-gives-me-a-double-line/8601 "2020-08-24T00:16:50Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Theevl](https://avatars.discourse-cdn.com/v4/letter/t/67e7ee/32.png) [@Theevl](https://forum.snapmaker.com/u/Theevl)\
**Post date:** [August 24, 2020, 12:16am UTC](https://forum.snapmaker.com/t/laser-cutting-from-svg-gives-me-a-double-line/8601/1 "2020-08-24T00:16:50Z")

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Luban 3.8 is giving me a double cut around a “single line” SVG drawing.

 ![2020-08-23 (1)](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/3/33ab70ad18a8791eab91eb1a6bb930668af99f46.png) ![2020-08-23](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/4/404ff32c427857a186562544f2c27d36d684fccb.png)

I am only cutting paper, so the first trace drops the cut out, and the second trace usually mars the finished product.

is there a way to make Luban produce gcode that only traces the path once?

I searched for “hairline” and “double cutting”, but I didn’t find anything.  
The Inkscape file has a line that is “0.1 pt”.

thanks

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**Author:** ![Theevl](https://avatars.discourse-cdn.com/v4/letter/t/67e7ee/32.png) [@Theevl](https://forum.snapmaker.com/u/Theevl)\
**Post date:** [August 24, 2020, 1:01am UTC](https://forum.snapmaker.com/t/laser-cutting-from-svg-gives-me-a-double-line/8601/2 "2020-08-24T01:01:20Z")

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Part of the problem was that the output of my “trace bitmap” was tracing both sides of the solid line, and therefore producing two lines that were very close together.

I solved the problem by upgrading Inkscape (from 0.92 to 1.0), and then using the new  
“centerline tracing (autotrace)” option (see final screenshot). Then I still had to reduce my line weight to 0.1pt.

now it works as expected, with a single pass, single trace cutting.

 ![2020-08-23 (2)](https://us1.discourse-cdn.com/flex022/uploads/snapmaker/original/2X/1/15e950c7f1fcecc21a4cb29538510c29556d7d5a.png)

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**Author:** ![Atom](https://sea2.discourse-cdn.com/flex022/user_avatar/forum.snapmaker.com/atom/32/5608_2.png) [@Atom](https://forum.snapmaker.com/u/Atom)\
**Post date:** [August 24, 2020, 4:11am UTC](https://forum.snapmaker.com/t/laser-cutting-from-svg-gives-me-a-double-line/8601/3 "2020-08-24T04:11:36Z")

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I love it when someone answers their own question. Thanks for the info, I have been meaning to give inkscape a try.

Happy making  
-Atom