How To Make A Mold - Alginate Mold Making Tips - MINI-TUTORIAL

Learn alginate mold making tips with master mold maker Rob Freitas (The Hobbit, Transformers, Men in Black).


Tips for When Alginate Goes Wrong is a simple study in 'snaps,' the alginate brush-up for prosthetic molding that will be cozied into a rigid shell and then backed with yet another hard material...usually a stone or other pourable hardening substance. Everyone who's ever tried it knows there are a few things to look out for.

But when Rob gets to man-handling this seaweed derivative, it's like putty in his hands. And once you've watched him, it won't be long before you drop any concern you ever had about it and jump right into your first perfect snap mold. 


Approximate Run Time: 00:17:04

View by Chapters

  1. Title & Introduction - 00:00:00
  2. Mixing the Alginate - 00:00:50
  3. Wrap Up - 00:15:19


CLICK on the links below to find the materials you need for this lesson. 


Some items might be harder to find, but a little internet scouring usually finds you everything you'll need.


Burman Industries

Reynolds Advanced Materials

Smooth-On Inc.



  • Lazy Susan
  • Partial Lifecast of Face (aka “Snap”)


  • Mold Life Alginate
  • Van Aken’s Klean Klay Alternative


  • Zip ME-301S Pattern Release


  • Files and Rasps
    • Hand Rasp


  • Latex Gloves
  • Plastic Mixing Buckets
  • Water
  • Wooden Stir Sticks




When working with toxic and/or dangerous materials or tools:


ALWAYS read labels for appropriate use guidelines

ALWAYS wear a high-grade respirator

ALWAYS work in a well-ventilated area

ALWAYS protect your skin

ALWAYS wear eye protection


Artist Information


Rob Freitas

Rob Freitas is the man that makes the molds for the highest echelon master sculptors. An artist's artist. A true master.

Rob Freitas is a leading mold-maker with more than 20 years’ experience in the field of Makeup Effects. He is...

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