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I just built 3 cabinet door frames that will contain glass. I use a tounge and grove joint between the stiles and rails. 2 out of 3 are fine, i.e., they are flat. The problem is that the third is warped badly (1/2″ out of flat for a door that is 14″ x 24.5″). Question is, what did I do wrong? Was the clamping pressure to high? Were the tounges and groves not square? Or maybe I just didn’t make sure that the frame was flat in the clamps. I need to remake this door (along with a couple of more) and I want to make sure this does not happen again.
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Eric
There could be a multitude of reasons for warpage however you may be able to stack the odds on your side if:
- you ensure that the boards are flat & the edges are square to start with as any windage or 'unsquare' edges can be compounded.
- make sure the machining of stick & coves, M&T's etc is accurate & the fit is good
- check when clamping that you don't over clamp or introduce stresses by incorrectly setting up the clamps
No doubt there are a few more that can be added....
Don
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