Is there an easier way to do this?

[ShnitzelKiller]

Right now I had to split the part I didn't want the shape to cut through and merge it again after I used the lasso to cut a hole through the front shell.

There's gotta be an easier way to extrude, inward as well as outward.

Any ideas?

[philnolan3d]

Use a curve, hold Cntrl while pressing Enter.

[ShnitzelKiller]

Use a curve, hold Cntrl while pressing Enter.

Oh, thanks. I didn't know you could fill curves. I just wish the handles were easier to manipulate; after you add them, you can't slide them on the surface anymore, but have to use those transform widgets. I like the way the splines in painting work (especially the right click scaling), and would love for these to be the same way. It's easy to accidentally add a point on the curve when you miss a widget D:

EDIT: I just discovered what happens when you hold control with the move tool... if you're using a solid brush, then movement along the surface normal is pretty useful for simple shaped holes / bumps.

It's pretty cool that it can detect surface normal at all, being a voxel.