3D Christmas Ornaments by Stefan Gales?

Am new here. Stefan Gales has some wonderful designs, but there are no production notes. Has anybody printed the Circle of Stars Christmas Tree Ornament - Large? Is this only for a laser sintering 3D printer, or can it be printed on a 3D filament machine (Prusa MK3)? I would like to buy his design, but need more info than a picture and a ‘pay here’.

Does it print with or without support?

Where do the designers put the production notes on pinshape? I very much like the production note style on Thingiverse.