I have been trying to find a viable solution to this problem. Quickly and easily making double lines. I tried the various extensions and they work but found them lacking in one specific area; making a double line with the outside diameter being where i want it and the inner diameter whatever width is designated between the lines. With the ends snapping and closing.
No using offset is work around and not as efficient as making double lines once, no other actions to make it happen.
I know that I’m not the only person who needs this. How difficult will it be for the Sketchup team to add this basic feature which is present in competing products?