Bloom Ring

Build a ring that expands and contracts

One link of an expanding ring: two 50 mm arms kinked at 150 degrees. Pin twelve pairs at their kinks and join the pairs end to end with M3 screws, and the ring breathes from a tight crown to a ring twice as wide when you pull it open. A kinetic centrepiece and a lesson in angulated scissors.

Customize this model

Size: 106 × 38 × 9 mm
Shape: Custom outline
Walls: 4.0 mm
Volume: 4.6 cm³
Est. weight (PLA): 5.7 g
Parts to print: 1
Category: Geometric & decorative
Made by: Krypto
Built in: 17 steps

What’s in it

Custom outline, 106 × 38 × 9 mm, with 4.0 mm walls
Custom outline traced from a shape
3 holes in the floor

How to print it

Print 24 flat in PETG; 36 M3 screws and nylock nuts.

Prints flat as a plate, no supports.

Filament: at most about 5.7 g of PLA printed solid (roughly $0.11 at $20 per kg); normal infill uses less.

To get the files, open it in the generator and choose File › Download STL (one file per part) or Download 3MF (every part on one plate).

Questions

What size is the bloom Ring model?

The bloom Ring model measures 106 × 38 × 9 mm (width × depth × height). You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. Print 24 flat in PETG; 36 M3 screws and nylock nuts. Prints flat as a plate, no supports.

How much filament does it use?

At most about 5.7 g of PLA (4.6 cm³ printed solid), roughly $0.11 of filament at $20 per kg. Normal infill uses less.

Can I change it?

Yes. Open it in the SO3D.xyz generator (free, in your browser), change the size, walls, dividers, holes, text or anything else, then download it as STL or 3MF for your slicer.