I have biscuited a piece of scrap - like an ugly piece you wouldn't use where it would show - flat like the top will be to the inside of the rails at the tip. I put one regular hole and one sloted hole in the scrap and screw the top on. You can see this up under the table but you can see the figure 8s or other pieces too. I have also put holes through the apron when it was 1 inch or more thick. You have to allow for wood movement but you don't need fancy fasteners to attach table tops.
Jim
Jim

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