Sheet metal question
Grain should be perpendicular to the bend because otherwise energy stored by the bend in the outside of the curve has a small likelihood of promoting fatigue cracks along the length of the bend.
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G
Join Date: Dec 2005
Location: E.Midlands
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Trick from one of the old workshop boys was to use fine emery on the edges of the bend line and use a sacrificial piece especially when its thicker, just remember to amend your bend radii to allow for it!
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