I had always hung face frame boxes with Jorgesen Clamps and bar clamps. Neither of these solve the issue of aligning both the faces and the vertical frames, but the claws do with some limitation--they cannot resolve angled installs of corner cabinets. I recently installed a set of Hickory cabinets, a species that, while it is relatively warp resistant, is also very resistant to attmepts to straighten what bows do happen. The claws worked very well, though I would suggest either a better gearing ratio and/or larger grips would make the effort more sucessful.