SAMPE Journal - January/February 2023 - 24

FEATURE
MOLDS FOR
COMPOSITES
Hybrid Technology Development to Directly Print
Thermoset Molds for Composites
Shai Hirsch, Guido Klingiel, Ido De-La-Vega, Moav Winnykamien
Massivit3D, Lod, Israel
Email: moavw@massivit.com
ABSTRACT
The manufacturing of composite parts and assemblies requires various kinds of tools, which determine the
accuracy, performance, and cost of the end component. Additive manufacturing (AM), also known as 3D
printing technology, has a direct impact on the manufacturing the of composite structures by offering rapid
production of molds. 3D printing of molds, jigs and fixtures for composites manufacturing increases flexibility
and design opportunities and reduces costs and lead time. Large-format AM systems, that can create an
object larger than 1 m3
, are the only systems that are suitable for rapid production of molds. Most of these
systems are based on single-screw thermoplastic pellet extruders.
Massivit 3D has developed a unique technology called Cast-In-Motion (CIM) and a designated system, the
Massivit 10000, for direct digital printing of tools and molds, made of a proprietary epoxy-based, Thermoset
casting material, CIM 500. The technology consists of printing a double-wall shell made of a proprietary UVcured
Water Breakable (WB) material, Dimengel 50, followed by casting a calculated amount of CIM 500.
The WB printing process and the thermoset-casting processes operate intermittently to create a near net
shape, thermoset mold encapsulated by the WB shell. After the encapsulated mold is cured to optimize its
mechanical properties at elevated temperatures, it is immersed in a water bath which causes the shell to
crumble away and can be post finished to obtain the desired surface finish and geometry for the mold.
The system can also be used for the printing of geometric cores and soluble mandrels for the composites
industry by utilizing the printing of the WB and other various acrylic base UV cured materials without the
conjunction of the CIM 500.
This paper presents the advancements in CIM technology with its proprietary materials to enable direct
manufacturing of complex finished molds. It also presents various applications from the design phase through
printing to post finishing that meet customers` requirements.
24 | SAMPE JOURNAL | JANUARY FEBRUARY 2023
DOI: 10.33599/nasampe/c.22.0003
www. sampe.org
http://www.sampe.org

SAMPE Journal - January/February 2023

Table of Contents for the Digital Edition of SAMPE Journal - January/February 2023

Contents
SAMPE Journal - January/February 2023 - Cover1
SAMPE Journal - January/February 2023 - Cover2
SAMPE Journal - January/February 2023 - Contents
SAMPE Journal - January/February 2023 - 2
SAMPE Journal - January/February 2023 - 3
SAMPE Journal - January/February 2023 - 4
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SAMPE Journal - January/February 2023 - Cover3
SAMPE Journal - January/February 2023 - Cover4
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