You can make arches, cylinders, spheres, toruses, spikes and wedges directly in Hammer. Here's how....
Select the block tool on the left-hand side.
On the right-hand side of the application locate the Category options.
Under Object: select the primitive shape required. Complete any requierd options, e.g. for the sphere select the number of faces.
Now, with the mouse in a 2D window, drag to create a block. [Note: at this stage the shape will just be a block -- you will not see a sphere for examle.] Once you have the block size you want hit ENTER and the primitiave shape will appear. For the arch and the torus after pressing ENTER a window will appear with additional shape options.
