this is a lego compatible brick that has been made to be easier to print, as there are no small holes on the underside, which make it require supports. this version instead uses a bridge, so most decent printers can print this with ease.
i reccommend a low layer height ~100 microns (0.1mm) no raft, brim is optional.
No supports are needed unless printer has issues with bridging
Print with as lower possible temperature to aid the bridging.
any questions just ask
The author hasn't provided the model origin yet.