Explain how to draw a groove inside a circle. Like the inside of a tyre

Hi, I’m new to sketch up and wanted to know if anyone can explain how to draw a groove cut out from the inside of a circle?

DO you have an example of what you are talking about? A circle is a 2D object, so I’m having a hard time visualizing what a “groove” in a 2d shape would look like. If you have a picture of what you are trying to create, I’m sure someone here could help you out!

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Hi Brett,

You can use SketchUp’s Follow Me tool to lathe a complex closed form aka a solid of revolution.

Here’s a video tutorial explaining how to lathe shapes with the Follow Me tool:

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Thank you Aaron, Im sorry for the perplexing question. I will try to find a picture and upload .

H George, Thats very kind of you, thank you. Im desperately trying to finish a model to send abroad and Im stuck as Im inexperienced! Kind regards. Brett

You’re welcome @Brett1

You’ll find the easiest way to model the tyre is to lathe the entire section profile in one go

Here’s an example model:
Tyre.skp (914.9 KB)

Many thanks George…

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