Tinkercad or librecad are free.
The first is online, the second has to be downloaded and installed. You can also use blender also opensource and very good, but it has so many options it can be ovehelming
Tinkercad or librecad are free.
The first is online, the second has to be downloaded and installed. You can also use blender also opensource and very good, but it has so many options it can be ovehelming