DarkAero, Inc. Courses/Aerospace Mold Making Course

The DarkAero Aerospace Mold Making Course

In the race to create better machines, traditional metals are increasingly being replaced with composite materials. Composite parts are created using molds, but the process of designing and building molds can be challenging.


The DarkAero Aerospace Mold Making Course is designed to give you the knowledge and skills required to design and build high-quality molds so you can make high-quality composite parts!

Who Should Take this Course?

This course is for anyone who wants to take their composite projects to the next level! If you want to build better composite parts, while saving time and money, this course is for you. The lessons taught in the course have helped students create airplanes, sailboats, racecars, robots, drones, and eVTOLS.

The Aerospace Mold Making Course complements the Aerospace Composites Course, but each can be taken independently.


The online course consists of lessons covering mold design and fabrication topics ranging from how to select the right material for your mold to how to CNC machine multi-section molds. The lessons include real world examples of how to design and construct production-grade molds for making high-quality composite parts.

This course will help you answer questions like:
What materials do I use to make a mold?
How do I make a mold that will give my parts a smooth surface finish?
How do I keep parts from sticking to a mold?
How do I turn a CAD file into a mold using a CNC machine?
How do I make molds larger than my CNC machine? 

The course includes:

  • Unlimited Access: There is no time limit on your access to the course! Revisit as many times you like. Start the course now and watch anytime, on any device! There's no need to travel or take time off. 


  • The Latest Information: The course is regularly updated. You'll stay on the cutting edge of new materials, technology, and methods.


  • 1-On-1 Help: You have your own unique composite project in mind. Let us help you overcome your biggest challenges with 1 hour of free consulting so you can kickstart your project or take it to the next level (projects requiring an export license as dictated by the requirements of the EAR or ITAR are not supported). 


  • Money-Back Guarantee: If you apply what you've learned and don't see an improvement in your composite results within 30 days of completing the course, simply let us know and we'll refund your entire purchase. Our goal is to help you achieve success, and we stand behind our training. Enroll today and get started with confidence!

Bonus material included in the course:

  • Purchase Guide: Navigating the range of suppliers and options in composites can be overwhelming. This guide shows you exactly where to buy the materials and tools you need to get started.


  • Manufacturing Process Guides: Once you're ready to build a mold, where do you start, and what do you need to get started? We provide several guides that walk you through from start to finish how to prepare, build, and finish molds and mold patterns including the process followed to create the composite-backed epoxy gel coat molds for the DarkAero 1. 


  • Discounted Access to the In-Person Course: A range of composite manufacturing techniques are covered in the course that can be directly applied to your project. After completing the online course, you can get more hands-on experience with these techniques in one of our in-person sessions. The price of an in-person session is discounted by the price of the online course if you have purchased an online seat. Learn more about the in-person course here


We are available to help throughout the online course. If you have questions at any point, we can be reached by direct message through the course chat or by leaving a comment on any of the lessons. 


Get started with the course for free using the button below! If you have any questions about the course and the subject matter, don’t hesitate to contact us!


Email: courses@darkaero.com

Phone: 608-616-9409


See you in the course!

Contents

Mold Basics

Ideas and designs are brought into reality through manufacturing processes. Manufacturing parts from composite materials often requires the use of molds. The precision and quality of a mold will directly impact the precision and quality of the part created from the mold. Therefore, high quality molds are essential to successfully manufacture high-quality composite parts.

There is a nearly endless selection of tools, materials, and methods that can be used to create molds, which can make mold manufacturing confusing and intimidating. The objective of this course is to provide a foundation of knowledge and hands-on training so that mold making does not become a barrier in the process of manufacturing composite parts.

Introduction to Molds
Preview
Composite Manufacturing Processes
Preview
Basic Rules to Follow
Preview
Mold Terminology
Preview
Summary of Mold Basics
Preview

Mold Construction Methods

There are countless ways to construct molds, but several of the most common methods will be discussed in this section. Each approach has its own merits and drawbacks. Whether one approach is better or worse than another is determined by the requirements of the composite part. If many different mold making techniques are understood, the best approach can be selected to construct a mold that can then be used to create the composite part.

“Off-The-Shelf” Molds: Flat Plates & Extrusions
Single-Use Molds
Moldless Construction
Molds Made From Existing Parts (“Splash Molds”)
CNC Machined Molds ("Direct-to-Mold")
CNC Machined Patterns
3D Printed Patterns and Molds
Large Scale Additive Manufacturing (LSAM)
Summary of Mold Construction Methods

Mold Materials

Molds can be built from many different materials. This section covers some of the most common mold materials including foams, composites, and metals, as well as their applications and limitations.

Overview of Foam Materials
Rigid Foam and Tooling Board
Casting Foam
Tooling Paste
3D Printed Plastics
MDF and Engineered Wood
Gel Coat
Fiber-Reinforced Composites
Aluminum & Steel
Other Materials
Summary of Mold Materials

Mold Design

Establishing Mold Requirements
Design Requirement - Cost
Design Requirement - Quantity of Parts
Design Requirement - Lead Time
Matching the Mold to the Process
Female vs Male vs Closed Mold
Matching the Mold to the Materials
Demolding Considerations
Edge Features
Summary of Mold Design + Design Example

CNC Machined Molds and Patterns

Overview of CNC Machining
CNC Machines
Cutting Tools, Machining Parameters, and Formulas
CAM, Toolpaths, and CNC Control Software
Stock
Work Holding
Work holding - Double Sided Tape
Work Holding - Clamps
Work Holding - Fasteners
Work Holding - Vacuum Table
Finishing Work
Mold Release
CNC Mold Machining Process Guide
Summary of CNC Machined Molds and Patterns

Making a Composite Mold from a Pattern

Once a mold pattern has been created and its surface has been sanded and coated with mold sealer and mold release, it can be used to create a mold. The process used to construct a composite mold from a mold pattern is outlined in this section.

Construction Process Overview
Demolding Strategies
Inspection, Defects, and Repairs
Finishing Work
Summary

Advanced Molds and Patterns

Multi-Section Patterns
Multi-Section Molds
Closed Molds
Advanced CAM and Machining Strategies
High Temperature Molds
Summary of Advanced Molds and Patterns

Appendix

Terminology
Purchase Guide (Updated 09/04/2025)
Mold Release Process Guide (Updated 05/14/2024)
Epoxy Gel Coat Mold Process Guide (Updated 05/31/2023)
Splash Mold Process Guide (Updated 05/31/2023)
Fusion 360 CNC Machining CAM - Revised Sump Mold (F3D File)
DarkAero Aluminum Mold Support Structure Plans (Updated 06/30/2023)