I have glued up the undercarriage, which includes everything below the table top except the buttons holding the top on.
The top of the leg where it is mortised into the top frame, and the mortise and tenons where the stretcher goes through the legs are draw bored. I applied glue and used a draw boring alignment pin to pull the joints as tight as possible and then also put a clamp across the joint to hold it when the pin is removed until the dowel is driven through.
I glued and assembled the four lower joints and but left the top joint fitted but unglued. This way I only had four joints to glue leisurely while working alone. A four inch dowel was glued and hammered into the draw bore hole. After destroying a couple of dowels with the hammer, I realized that a wooden block would protect it and by drilling a depth hole into the block, it would prevent the dowel from being flared from the hammer, and would also leave an exact amount of the dowel still proud.
After hammering, the joint is complete. Also shown is the block with its hole. The block worked very well.
After the four lower joints were complete, clamping the frame tightly to the leg allows the draw boring through the frame and the four top joints along with glue. The gluing is now complete and the undercarriage is left to dry.
Trimming the dowels flush with a chisel completes the undercarriage except for finishing.
Next buttons !