Looking around here got me infected with the sand table bug and I have now officially started my build.
It will be a regular x/y table (no H-type kinematics) with 2 NEMA17 steppers and direct belt drive for X, indirect 2:1 belt drive for Y.
I got a set of four 8mm dia 500mm long linear bearing sets for $40 and hope they will be rigid enough for this purpose.
TBA6600 drives and a Planet-CNC motion controller that I happen to have from another project.
The somewhat strange foot is intended to match the design of my Norwegian chairs.
Right now I am printing some of the smaller components and will start machining some of the frame and foot parts soon.
One thing I am not sure about yet is the plate that will carry the sand surface. Would a 1/8" aluminum or glass plate do the job? Right now I am planning to use a 1/2"dia x 1/2" long Neodymium magnet and a 1/2" steel ball. What distance is optimal?
Some pics attached…