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Does the tapered tongue produce a step at the surface as the joint opens up?

April 26, 2017Joint opens step tapered Tongue

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Does the tapered tongue produce a step at the surface as the joint opens up?

1 Answer

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All keyed joints have a taper on the tongue. This is necessary to allow the joints to move apart freely. Square tongues can cause the joint to bind and cause stress cracking adjacent to the joint line.