Bladderwrack

Keep keys afloat when they fall in water

A floating key fob after bladderwrack, the seaweed that holds its fronds up to the light with gas-filled bladders. The sealed 34 mm capsule displaces about 58 ml, enough to keep a car key and a couple of others on the surface if they go over the side. The ring handle takes the key ring.

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Size: Ø 34 mm, 64 mm tall
Shape: Round
Walls: 1.6 mm
Volume: 15.0 cm³
Est. weight (PLA): 18.6 g
Parts to print: 3
Category: Outdoor & adventure
Made by: Krypto
Built in: 9 steps

What’s in it

Round, Ø 34 mm, 64 mm tall, with 1.6 mm walls
Screw-on lid (prints separately)

How to print it

PETG, 3 walls; PTFE tape on the thread. Test it with your keys first.

Prints as shown on its floor, no supports. The threaded lid and its neck piece print separately; adjust Fit in the Lid tab if it binds.

Filament: at most about 18.6 g of PLA printed solid (roughly $0.37 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 bladderwrack model?

The bladderwrack model measures Ø 34 mm, 64 mm tall. You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. PETG, 3 walls; PTFE tape on the thread. Test it with your keys first. Prints as shown on its floor, no supports. The threaded lid and its neck piece print separately; adjust Fit in the Lid tab if it binds.

How much filament does it use?

At most about 18.6 g of PLA (15.0 cm³ printed solid), roughly $0.37 of filament at $20 per kg. Normal infill uses less.

How many parts does it print as?

3 parts. The download lays each part flat in its best print position: Download STL gives one file per part, Download 3MF puts them all on one plate.

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.