Is there anyway to "cut" part of a model out?

[system]

I have some messy detail on a part of my model that I kind of want to chop out and start over with. But every tool I can think of to get rid of it merely flattens it and twists it and shrinks, it doesn’t get rid of the messy detail.

Is there anyway to just chop out that part?

[HD_CG_ADDICT]

im not quite sure what you want to do:
if its just to remove the detail try the smooth brush.
if you want to remove the geomertry, mask off the part you wish to disgard, hide it then hit the delete hidden button.

hope that answers your question