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Kai Parthy Lay Filaments

Growlay 3D Printer Filament

Growlay 3D Printer Filament

Growlay 3D Printer Filament

£12.50 £15.00 (inc. VAT)
Stock Status: Sold Out
Growlay is a unique 3D printing filament from the chemical engineer Kai Parthy. We would love to know what you would use it for!
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GROWLAY - Filament / what is it ?

  • Print 3D objects and let biological cultures grow on it, such as, 
  • Grass; moss
  • Fungus ; mildew
  • Lichen
  • Mycelium
  • Pharma-cultures, mother cells

GROWLAY works like a breeding ground. Add seeds or spores to them and they will grow.


GROWLAY properties:

  • GROWLAY is microcapillary. Its cavities absorb and store water, dissolved liquid nutrients or fertilizer. Promoted because of the capillary action throughout the printed object.
  • Mold grows through the open-cell capillaries and forms a mycelium.
  • Seeds of grasses can get caught and grow in Growlay.
  • Spores find room to germinate in small cavities. (see SEM-Pics)
  • Roots cling to the structures of the object filling.
  • Even lichens grow on Growlay. These usually grow preferentially on stones of walls or trees.
  • GROWLAY can be sterilized (for food use and research) with gases or wet (but not thermally)
  • For colour differentiation, objects printed with Growlay can be subsequently coloured with food colours.
  • Is an absorptive carrier for agents

GROWLAY is available in the functionally different versions white and brown
Version white is an experimental filament & fully compostable
The brown version contains not only pores but also built-in "food" in the form of cell material which is needed for growth

PLEASE NOTE:  GROWLAY - has two versions:

1) GROWLAY-WHITE, pure & porous, experimental filament for experienced users only

  • Fully Compostable polymer
  • With open capillaries
  • White filament
  • Print range from: 85° - 135°C
  • GROWLAY-white 1.75mm (real: 1.55mm - 1.85mm)


  • As a beta version 1.75mm Growlay filament comes unfortunately in variation of diameter from ~1.45mm to 1.8mm
  • Is not as easy to print with Bowden extruders
  • Filament can be fast grinded at the hobbed bolt if the feed somewhere is blocked
  • The 3mm filament prints a little easier due to its thickness 
  • GROWLAY-white 3.0 mm (real average: 2.50mm – 2.85mm) works fine, also with Bowden

Note:  We cannot accept returns on the White Growlay as it is an experimental material only.

2) GROWLAY-brown, porous + wood particles, for any user

  • Not compostable
  • With open capillaries
  • Polymer contains organic nutrients (+wood particles)
  • Higher tensile strength
  • More rigid as version white-
  • Increased temperature stability
  • The filament can be printed just as easily as Laywood,
  • Brown filament
  • Print at: 235°-250°C


  • Brand:
    Kai Parthy CC Products
  • Condition:
  • Product Code:
  • Weight:
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