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3D printed molds for resin 

Blog post 

If you have ever wanted to create resin art or products with your own unique shapes 3D printed molds might be the solution you have been waiting for. While silicone molds are great for basic forms like coasters or jewelry 3D printing allows you to bring your wildest design ideas to life in custom molds tailored to your vision.

This guide will walk you through the benefits of using 3D printed molds for resin how to make them and what to keep in mind before you start.

Why Use 3D Printed Molds for Resin Projects

Standard silicone molds are limited by what is commercially available. With 3D printed molds you are no longer stuck with generic designs. Instead you can create:

• Custom shapes and textures
• One of a kind art pieces
• Personalized gifts and product prototypes
• Detailed geometric or organic forms

Whether you are an artist looking to level up your resin game or a small business owner wanting to create branded products 3D printing gives you full creative control.

What Materials Work Best

When making molds for resin the material you use for 3D printing is key. PLA is common and affordable but it can warp or degrade when exposed to resin over time. For better results use:

• PETG or ABS for more durability
• Resin printed molds if you have access to an SLA printer
• TPU for flexible molds but only for advanced users

To prevent the resin from bonding to the mold surface it is also recommended to seal or coat the mold before pouring. A few coats of mold release spray or epoxy safe sealing agents can extend the life of your mold.

You can find quality mold release sprays here Smooth On Mold Release Products

How to Make 3D Printed Molds for Resin

If you are new to 3D design and printing here is a simple workflow to get started:

Step 1 Design Your Mold

Use software like Tinkercad for beginners or Fusion 360 for more complex modeling. Design the negative shape of your object keeping in mind draft angles for easier demolding.

Check out our intro to 3D design tools for resin projects

Step 2 Slice and Print

Export your design and slice it using Cura or PrusaSlicer. Print using your preferred filament and resolution. For detailed molds a layer height of 0.1 to 0.2 mm is recommended.

Step 3 Post Process

After printing remove supports sand any rough edges and apply a mold release agent or sealant. This will protect the mold and prevent sticking.

Step 4 Pour Your Resin printed 

Once the mold is ready mix and pour your resin just like with any silicone mold. Monitor for air bubbles and be sure to cure in a dust free environment.

For tips on getting crystal clear results read our resin pouring techniques guide

Creative Resin Ideas with 3D Molds printed 

Here are just a few ideas that become possible when using custom 3D printed molds

• Resin chess pieces with intricate details
• Personalized keychains or branding tokens
• Sculptural resin art with geometric or generative patterns
• Glow in the dark coasters or lamp bases

You can even use generative art software to design shapes that feel completely futuristic and one of a kind

Final Thoughts printed

3D printed molds open up an entirely new world of possibilities for resin creators. While the learning curve is a bit higher than using pre made molds the freedom to design and create exactly what you want makes it totally worth it.

Whether you are making your first

custom keychain or prototyping a line of resin home decor this technique can take your projects to the next level

Ready to explore more Check out our guide to custom resin casting

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