Hi all.
I am very new to 3d printing but am very eager to make a few things.
I have only been playing around with TinkerCad.

What types of program do I need to make a mold like this?
https://img1.etsystatic.com/020/0/81...05703_8xcg.jpg

And geometric designs like these
https://farm9.staticflickr.com/8396/...5fcc0709_z.jpg

Thanks

J