# double lines - find/erase them? / work-around?

**URL:** <https://discourse.shapr3d.com/t/double-lines-find-erase-them-work-around/29146>\
**Category:** Modeling Questions\
**Created:** [December 1, 2023, 9:43am UTC](https://discourse.shapr3d.com/t/double-lines-find-erase-them-work-around/29146 "2023-12-01T09:43:45Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![shape-it](https://sea2.discourse-cdn.com/flex002/user_avatar/discourse.shapr3d.com/shape-it/32/25963_2.png) [@shape-it](https://discourse.shapr3d.com/u/shape-it)\
**Post date:** [December 1, 2023, 9:43am UTC](https://discourse.shapr3d.com/t/double-lines-find-erase-them-work-around/29146/1 "2023-12-01T09:43:45Z")

</div>

Hey there!  
after a year of use, I was able to help myself through many “ups and downs” by videos and the try-and-error method. However, I am now stuck… When I create a sketch, it often happens that I draw lines on top of each other, like placing points at certain distances where I can dock later. If I don’t trim these lines, duplicated lines overlay at these points/distances, resulting in errors on our milling machine. The current solution would be to trim all lines in a drawing individually. So trim, if line disappears, step back, next line.

I thought I recently found a solution using the “Projection” function. Taking the 3D body and projecting it onto a plane. Would have been fantastic if it would not generate three lines always on top of each other in general.

So, is there a function/workaround where only a sketch from a 3D Body with simple lines is generated? Or a function where sketches are checked for duplicate lines and possibly even cleaned up?

Thanks & Cheers!