Hi,

I am looking for an efficient way to create a spiral that follows the inner outline of a closed curve with a defined distance between the lines.

For example, starting from the upper-left corner of a rectangle, the spiral would follow the shape’s interior outline, continuing inward turn by turn at a specific offset distance.

Could you suggest a method or tool to achieve this?

Thanks,
Joerg

Hi Joerg,

re:
> For example, starting from the upper-left corner of a rectangle, the spiral
> would follow the shape’s interior outline, continuing inward turn by turn at
> a specific offset distance.

Can you make a rough sketch of it?

Thanks,
- Michael

Hi Michael,

Thanks for your message!

I attached an example with a simple rectangle as closed curve and created the spiral manually with the Offset function, added short connection lines, trimmed the offset rectangles and joined the lines to a single spiral curve.

Cheers,
Joerg