Reply by Madmark2

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Posted on Short glue test

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2643 posts in 1667 days

#1 posted 02-28-2021 07:01 PM

The 45° has nothing (or very little) to do with material and more with geometry. When you press forward (or down with gravity) the maximum force is aligned with the force axis. As you move off axis the force drops off by cos(x), reaching 0 at +-90°. At the same time the lateral force in increasing from zero by sin(x) to max at 90°. At 45° the forward and lateral forces are equal and the primary force axis shifts to the side once the angle exceeds 45°.

-- The hump with the stump and the pump!

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