Need help with closing lines

[TinWhisperer]

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Go to upper left corner and click on the File Menu Icon: [Export f3d-1a] Click Export: [Export f3d-1] Choose a location to save the file. Use the current location listed or change it by clicking on the square with the 3 dots. Make a note of the folder as you will need to find it later to upload to the forum. [Export f3d-2] For this Example, I am going to choose the “Example” file folder: [Export f3d-3] Once you have the location selected click export: [Export f3d-6] To upload to…

Lots of overlapping lines there.

Looks like you a creating a bunch different bodies by using the "new body instead of “join” in the extruded menu .