Is there any way to create 2d objects on a 3d mesh in order to extrude or intrude to further shape the mesh.
Basically I want to be able to take a cube and draw a circle or rectangle and extrude it out to add more to the mesh or to intrude it to take away from the mesh.
I realize I can do this with binary ops but I want to be able to it like it’s done in Sketchup
Remember blender is not sketchup no matter how much you want it to be so don’t try and duplicate how sketchup works. You have to use blender in the way blender works, it’s a polygon modeller. If you want to add shapes you can use the add menu to add another primitive, use booleans, use the knife tool or just basically model it poly by poly.
Is there at least a way to free draw a shape on a face of a mesh?
My advice: subdivide your original face until you get a multitude of vertices, then bridge them as you wish with the “F” key. For now, I don’t think Blender has any tool able to “draw” edges or something like that. You’ll have to deal with the “knife” tool and the “snapping” mode.
Add a Cube . Select the face where you want to add the circle . Set the 3d cursor to the selected face. Unselect cube. Add Circle . Turn down circle segments form 32 to 8. unselect circle. select cube . delete the face, where you want to add the circle. now join cube and circle. in vertice mode, join the circle with cube vertices.
This is the way , how we add circle to a cube in blender (boolean modifier is not the best option).
You can draw on a surface with Bmesh by pressing K to bring up the knife cutting tool.