Donut Maker 3D print model

This is donut maker. It's 3d printable. All files are attached. STEP solid file format also attached. Should use hard material to print it. Only spring can't print, you have to buy it from local store.

Mpdel updated, I added locking system to make it stable and not come out. Update details image attached.

Spring details: Length- 60-70 mm, OD-16.5 mm, Pitch-4 mm, Core dia-1.5 mm.

Thanks,Mahbub