Mycelium brick mould — 3D-printable model preview

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Sustainable living Multi-part assembly

Mycelium brick mould

Grow a solid brick of mushroom mycelium as a biodegradable building material

Mycelium, the root network of mushrooms, can be grown into solid shapes and is already used for packaging and insulation. Pack this mould with pasteurised sawdust or hemp mixed with oyster mushroom spawn, put the lid on and leave it somewhere dark. In about a week the white mycelium has bound everything into a light, solid brick. Pop it out, bake it at 90 degrees for an hour to stop the growth, and you have a block that is fire-resistant, insulating and fully compostable. The small vents let it breathe.

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Size: 200 × 100 × 65 mm
Shape: Rectangular
Walls: 2.4 mm
Volume: 239 cm³
Est. weight (PLA): 296 g
Parts to print: 2
Category: Sustainable living
Made by: Krypto
Built in: 30 steps

What’s in it

Rectangular, 200 × 100 × 65 mm, with 2.4 mm walls
Raised text: “GROWING”
2 patterned wall panels (cut-out)
Lift-off lid (prints separately)

How to print it

PETG; wipe with alcohol first. Use oyster mushroom grain spawn mixed with pasteurised hemp hurds or sawdust.

Prints as shown on its floor, no supports. The lid prints as a separate part, top down.

Filament: at most about 296 g of PLA printed solid (roughly $5.93 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 mycelium brick mould model?

The mycelium brick mould model measures 200 × 100 × 65 mm (width × depth × height). You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. PETG; wipe with alcohol first. Use oyster mushroom grain spawn mixed with pasteurised hemp hurds or sawdust. Prints as shown on its floor, no supports. The lid prints as a separate part, top down.

How much filament does it use?

At most about 296 g of PLA (239 cm³ printed solid), roughly $5.93 of filament at $20 per kg. Normal infill uses less.

How many parts does it print as?

2 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.

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Make it fit your space

Change the size, walls, dividers, holes and labels of the mycelium brick mould model in your browser, then download it for your printer. Free, no CAD needed.

Customize this model