Not able to trim

LightBurn Software Questions
1

I’m sorry to ask, but i keep watching tutorial videos and they all say the same thing, but i cant seem to replicate the feature. This is a drawing i am making just to get familiar with the software. it is intended to be a simple gasket. the smaller hole is a through hole and the larger hole is to be trimmed at the intersection of the line and the circle.

I have selected all of the artwork and converted into a Path.
I have selected the circle and the lines and then tried to trim, but i can not.

I also tried to weld it all together and had no success. could someone give me a cluse here?

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image1008×1180 16.7 KB

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image1008×1180 16.7 KB

2

Upload your lbrn file and someone will take a look at it.

3

If you draw it like attached, and group the 4 blue circles, select the rectangle, then the grouped circles, and then Boolean subtract.

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image1448×815 69.1 KB

Gasket.lbrn (14.1 KB)

2 Likes
4

You can also radius inside rectangle

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image595×555 2.06 KB

4 Likes
5

That’s even easier :slight_smile:

6

The inner “rectangle” looks like it is composed of four lines, so it’s not the closed shape required by the Boolean operations:

All shapes used with the Boolean tools must be closed shapes, meaning continuous loops whose starting and ending points are the same.

You must start with a rectangle and chop pieces out of it, rather arrange four sides that get glued onto other shapes.

7

You are correct. they were individual lines, I used the second option suggested of drawing a rectangle and then applying a negative radius. Thank you for the help.

I left autocad in 1998 when I was one of the very few people drawing in 3D and feeding data to the spo floor sor CAD CAM operations, Windows 95 broke my appetite for the work.

But the 28 years of not doing this kind of work has me learning all new tools to try to express ideas on paper. The community has already proven to be an excellent resource. Once I learn the tool well enough to become proficient, i hope to give back by answering a few questions myself.

8

Without a firm grasp on the welding and boolean tools, I found your solution was by far the most reasonable for me. Thank you!

9

Much better & more useful than doing Sudoku, IMO. :grin:

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10

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