I monkey around with DraftSight
It is a 2D AutoCAD work-a-like that you can download from free (personal use). https://www.3ds.com/products-services/d ... -software/
Made be the same people that make SoildWorks.
As an aside, I do my TD design work in 3D using Solidworks.
It has a pretty steep learning curve but is a top notch program.
Kindest Regards to you all.