Acad offers a free software (cloud based) called Fusion.
it is a 3d modeling package and will make 2d prints.
But you can't use it for any commercial purpose, and you have to agree to that.
If you wish to see just how capable it is.
look at "two stroke stuffing" on the youtube. He designed a cylinder casting using it then 3d printed a mold, then cast it. all in his frozen Nordic shed...