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TM Stock
1/4" panels are usually stiff enough so that buckling is not a big issue. Many luthiers just use tape (as I do for alignment), but I've repaired hundreds of failed edge joints on instruments, and there is a strong correlation between glue line thickness and cohesive failures, so getting glue line pressure up to a reasonable level - whether with wedges or clamps - is something that I think pays off.

The individual wedges do a better job of handing uneven thicknessing on the panels - if the stock is already uniformly thicknessed, a clamping bar would work provided it has the usual gentle rocker to apply even pressure.

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