DIY Volumetric Silicone Mold and Flat Mold from Sealant and Starch

DIY Volumetric Silicone Mold and Flat Mold from Sealant and Starch

D
Do as I Do
288 Video Views·Feb 8, 2026

DIY Volumetric Silicone Mold and Flat Mold from Sealant and Starch

In this video, I show how to make DIY silicone molds using regular sealant and starch — no expensive silicone needed.

You’ll see two different techniques: how to create a volumetric (3D) silicone mold and a flat silicone mold, step by step.

This method is cheap, simple, and perfect for beginners, especially if you want to experiment with mold making without spending a lot of money. These homemade silicone molds can be used for plaster casting, resin, concrete, soap, wax, and more.

If you’re into DIY projects, mold making, 3D molds, or budget crafting hacks, this video will give you practical ideas you can try right away.

👍 If you enjoyed this video, don’t forget to like, subscribe, and share it with fellow DIY makers!

Materials and tools:
Silicone sealant;
Corn or potato starch;
Vaseline;
Brush;
Cloth;
Liquid plastic or plaster;

LET'S RESIN Polyurethane Resin: https://amzn.to/3TWvXe0

Check out my other videos:

How to Thin Silicone Sealant and Make a 3D Silicone Mold: https://youtu.be/Lm9NGDMvUDw

How To Dilute Silicone Sealant and Make A Silicone Mold: https://youtu.be/Q529w3E_Si0

Sealant + Water = Ideal and Budget-Friendly Silicone Mold!: https://youtu.be/FX54fcJjVMk