Its a real pain trying to plane a door or fit hinges and handles with the thing clamped between your knees or trying to lean it up against something. It always moves or your legs get in the way.
Not anymore I was on site working and came across a carpenter with these:
Door clamps, they make the job so much easier and the door is safe and secure while you work on it so no more falling over as you lean over to pick up a sharper chisel.
Such an easy idea but so useful.
click on the image where you will be taken to ebay to be able to view and purchase.