The author remixed this model.
SkyWatcher EQ5 tripod auxiliary tray
(See also: https://www.printables.com/model/1040019-frame-for-models-of-telescope-trays
I have not printed this model, but it is practically identical to the EQ6, which prints without problems. The dimensions are based on data provided by users who have the EQ5.
For more details see: https://www.printables.com/es/model/304688-new-tray-for-the-skywatcher-eq6-r-pro-mount
It prints without supports.
Additional material:
(x2) bolts M6x50 DIN933 (ISO4017)
(x2) nuts M6 DIN934 (ISO4032)