Bemfarmer,

I understand there is a mathematical way of doing this and that we would need to solve some equations to do this via a script. But I didn't recall the way to do this by "construction" either.





In order to construct L1' one as to first construct the blue circle with a radius of R1+R2, then draw a line from C1 to P1 which is tangent to the blue circle, (Moi give us a snap point at P1) then we translate L1 from P1 to P1' along the radius line (cyan) from C2 to P1.

The process is basically the same to construct L2' except this time we create a circle (cyan) with a radius of R2-R1 instead.

Regards,
Felix