With two pieces of ash, I make a mortise and a tenon
I cut a circle segment..
.. which is routed with an angle of 43 degrees (my latitude)
.. the resulting piece is cut lengthwise at an angle (difficult to determine - I used trial and error)
then assembled with a biscuit jointer.
The mobile part is ready to glue up.
Starting to assemble the fixed part. I bought the DC motor, regulating circuit and reducing gear from conrad.fr
Detail of the drive cylinder, made of wood covered with heat-shrink tubing for traction
The south pivot uses a window hinge
The north-east bearing
The table is almost finished, with its electronic box and leveling screws.