Print the model 4 time, 2 times mirrored.
This is was made to hold a 4mm plate on top of the default table. the clamps are placed left and rigth of the middle part and are fixed by two tensioning straps under the table. This way the cup holders are still accessible.
Works pretty well, is sturdy and fast to remove. Additional strength is given by placing long M3 screws in the part.
The author hasn't provided the model origin yet.