Quote:
Originally Posted by David Gardiner
...When you use a stump you are partly stretching and partly shrinking the panel.
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I agree. Anytime you hit a panel, you're pushing the metal in the path of least resistance. If you're over a hole in a stump, the subsequent stretch is what causes the tuck to form, which can then be shrunk. Since most panels are made by both stretching and shrinking it works fine.