I made a mistake of creating another mesh in edit mode so when I use ctrl + J to combine mesh it doesn't work. What would be a good way to combine 2 meshes together in edit mode since they are already considered as one mesh object? As you can see I would like to merge both the cone and the cylinder together into one single mesh. The cylinder is just a extrusion of the ball object. For now I'm going to re-add the cone in object mode then ctrl + j to merge.
What are you trying to do? Deleting the cone, adding it in object mode, and then using ctrl + j just gets you back to where you started. Its the same as adding it in edit mode.
Assuming you want to join them to one flowing mesh.
- Select the edge loops with alt + rightclick
- Search in the space search menu for bridge edge loops
- Select it from the search