My niece's husband is career military and they move a lot. She saw the farmhouse table on Ana's site and asked if I would build her one that could be disassembled for moving and have extensions for large group gatherings. Challenge accepted!
In order to take the table apart, I used 2 - 6 inch long lag screws at the top of each leg that screwed into the 2x4 supports for the table top. Due to the weight of the table, it is advised to turn the table upside-down when removing the screws or assembling the table. Next, I used 3 inch lag screws to secure the beam under the table. Again, the lag screws are easily removed for moving.
For the leaf inserts, I utilized a dowel jig so the leaf extensions could be easily inserted and removed on the sliders that support the breadboard ends. (It is necessary to drill the holes out a little larger that accept the leaf dowels. If this is not done the leafs will fit too tight and it is difficult, if not darn impossible, to remove them.) This was advantageous for two reasons ... (1.) The leafs are easily installed and removed; and (2.) No need for leaf extensions that have their own 2 x 4 sliders. This reduces storage space for the extensions and eliminates the slider insert hole cutouts on each end of the table because the slider is never removed.
The table, when disassembled, is in (8) sections:
(2) table leg sections
(1) table top
(1) Main beam from under the table
(2) Leaf extensions
(2) Breadboard ends attached to 2x4 sliders
My niece is simply thrilled with the table.