This model is the property of ma-unique. All I did was to set up suggested settings for each plate into a 3mf to save time.

The assembly video is linked to from his Printables page printables.com/model/281019-disc-shooter-mk4.

Plate 3 is suggested to use a brim I tested it without and it worked just fine for me so that is how I included it. The disc plate is suggested at 20% infill I left mine at the slicer default of 15% which saves a whole 0.41g of filament and 30 seconds. The disks are incredibly easy to lose so bright colors that don't blend in with your floor would be recommended.