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ToolsSilicone MoldsPlaster Mold

Silicone Molds#22Studio

Plaster Mold

Rig for casting plaster molds: slipcast, plaster, concrete

A printed cradle for casting plaster molds of your figure, ready for slip, plaster or concrete.

Open in the designer

Designing and previewing in 3D is free for every tool. A plan is only needed to download the ones marked Pro or Studio. See plans

Plaster Mold

Step by step

How it works

Step by step, to the finished piece

  1. 1

    Upload your piece’s model (STL, OBJ or 3MF) or pick an example vessel.

  2. 2

    Choose how many pieces the mold splits into, the pour spout and the material you’ll cast.

  3. 3

    Print one base per piece, the walls and the clamps. Assemble the walls on a base and pour the plaster.

  4. 4

    Once it sets, move the walls to the next base and cast the next piece. At the end, put the plaster pieces together.

What to watch out for

  • Testing: the bases and the pour spout haven’t been cast with real plaster yet. Print one base first and check that it fits.
  • Reference values taken from published ranges. Every clay, plaster or mix has its own: measure yours with a test bar and type it in the field.

What you need

Materials and tools

  • A filament (FDM) 3D printer
  • PLA or PETG filament
  • The 3D model of your figure, as an STL
  • Mold-making plaster
  • A release agent so the plaster doesn't grip the cradle

Silicone Molds: other tools

  • Silicone MoldPro
  • Ice & Chocolate TrayPro
  • Two-Part Box MoldStudio
  • Silicone HousingStudio
All tools

Plaster Mold

A printed cradle for casting plaster molds of your figure, ready for slip, plaster or concrete.

Open in the designer
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