Free Educational Webinar

How to Design and 3D Print Molds for Casting Silicone Parts

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You have a design of your product ready and you want to make it in-house out of a flexible material. Casting silicone into a 3D printed mold is a cost effective and quick way to design flexible products in-house. However, many users feel that getting started with a mold design for 3D printing 3D printed mold making can be a bit daunting.

In this webinar with Onshape we’ll show a step-by-step process for generating a mold around the CAD file of an existing part. This tutorial will feature a case study of a wearable device that needs to be casted in a skin-safe silicone. You’ll walk away with best practices for silicone mold design, and specific tools within Onshape to help you get started.

What you will learn:

  • Guidelines for mold design in Onshape, including selecting a parting line, adding alignment features, and more.
  • How to set up a two part mold in a 3D printing preparation software that’s free to use.
  • Which 3D printing technology (SLA vs FDM) is the best choice for producing molds for soft materials.

Fill out the form on the right to register to learn more. We’ll also opt you into other relevant marketing communications.

Webinar Speakers


Analisa Russo

User Applications Manager, Formlabs

Analisa is a member of the Partnerships + Community Team at Formlabs, where she works closely with customers to tell their workflow stories in the form of both educational and inspirational online content. Analisa has a background in materials science (MIT ’08 and UIUC ’14) with a focus on desktop fabrication techniques. Prior to joining Formlabs, she worked as lead developer of Circuit Scribe, a conductive ink pen with applications in education, art, and circuit prototyping.


Neil Cooke

Director of Technical Services

Neil is the Director of Technical Services (EMEA) at Onshape. He holds a degree in Mechanical Engineering from the University of Leeds and has spent most of his working life in the CAD industry at various companies including Applicon, PTC, and SolidWorks. He enjoys spending time with his family and friends, music, running, and playing football (soccer).