Shrinking Silicone Molds

11,988

91

7

Learn how to shrink a mold to reduce the size of an already existing original.  Through a simple mold making technique you can shrink a mold by nearly 25 percent without re sculpting a smaller original.

Teacher Notes

Teachers! Did you use this instructable in your classroom?
Add a Teacher Note to share how you incorporated it into your lesson.

Be the First to Share

    Recommendations

    • Made with Math Contest

      Made with Math Contest
    • Cardboard Speed Challenge

      Cardboard Speed Challenge
    • Multi-Discipline Contest

      Multi-Discipline Contest

    7 Discussions

    None
    foobear

    6 years ago on Introduction

    Cool. I always wondered if you could make a shrinking mold - like shrinky dinks but 3 dimensional. interesting technique!

    3 replies
    None
    AlumiliteCorpfoobear

    Reply 6 years ago on Introduction

    You can even swell a silicone mold by submersing it in odorless mineral spirits. It does have it's limitations as to how much it can be done though. Usually 15-20% max. Thanks for watching!

    None
    jduffy54

    6 years ago

    If you're interested in a cheaper version, one part silicone caulk (~$3 a tube at most hardware stores), one part corn starch, and two parts mineral spirits, mixed thoroughly, will achieve similar results

    None
    Patrik

    6 years ago on Introduction

    There's also some shrinking and even expanding polymers with which you can achieve a much larger size change:

    HydroSpan 400 Shrinking Resin - http://www.youtube.com/watch?v=9YFjtKqv3QE
    HydroSpan 100 Enlarging Polymer - http://www.youtube.com/watch?v=uDry-goiVTY

    Very cool stuff!

    None
    foobear

    6 years ago on Introduction

    Cool. I always wondered if you could make a shrinking mold - like shrinky dinks but 3 dimensional. interesting technique!