Designing Custom 3D Printed Parts

When we first started exploring 3D printing, we were amazed at how quickly ideas could turn into real, tangible objects. Designing custom 3D parts opens up a world of possibilities. Whether you need a unique component for a machine, a prototype for testing, or a one-off replacement part, 3D printing makes it accessible and affordable. Let us walk you through the essentials of designing your own parts, so you can bring your ideas to life with confidence.

Why Choose Custom 3D Parts for Your Projects?

Custom 3D parts offer flexibility that traditional manufacturing methods often can’t match. You can create complex shapes, tailor parts to exact specifications, and iterate designs quickly without the need for expensive tooling. This is especially useful for businesses and engineering teams looking to save time and reduce costs.

Here are some key benefits:

• Rapid prototyping: Test and refine your designs faster.

• Cost efficiency: Avoid expensive moulds or machining setups.

• Complex geometries: Produce shapes that are impossible or costly with traditional methods.

• On-demand production: Print parts as needed, reducing inventory.

  
  

For example, a CNC shop might need a custom jig or fixture that perfectly fits a specific machine or that will hold a complex part for machining. Instead of waiting weeks for a machined part, they can design and have it printed it in a matter of days. This agility can make a big difference in project timelines.

Specialised Jaw 3D Printed in Rigid Resin

How to Start Designing Custom 3D Parts

Starting your design journey can feel overwhelming, but it’s easier than you think. Here’s a simple step-by-step approach:

1. Define the purpose: What will the part do? What forces will it face? Knowing this helps you choose the right material and design features.

2. Sketch your idea: Use paper or digital tools to outline the shape and dimensions.

3. Choose your software: There are many CAD programs available, from beginner-friendly options like Tinkercad to professional tools like Fusion 360 or SolidWorks.

4. Model your part: Build a 3D model based on your sketches. Keep in mind the printer’s capabilities and material constraints.

5. Check for errors: Use software tools to find and fix issues like holes, non-manifold edges, or thin walls.

6. Export the file: Ideally save your design as a STP file as this enables us to be able to make changes if needed for the print process or use an STL or OBJ file, which is compatible with most 3D printers.

   
   

When designing, remember to consider tolerances and fit and any additional hardware requirements like threaded inserts, especially if your part will connect with other components. Adding small clearances can ensure parts fit together smoothly and we are able to give you the ideal tolerances for the material you have chosen

Materials and Printing Technologies to Consider

Choosing the right material and printing technology is crucial for your part’s success. Different materials offer varying strength, flexibility, and finish quality. Here’s a quick overview of the less specialised materials we use:

• PLA: Easy to print, biodegradable, good for prototypes and decorative parts.

• ABS: Stronger and more heat-resistant than PLA, suitable for functional parts.

• PETG: Combines strength and flexibility, with good chemical resistance.

• Nylon: Durable and flexible, great for mechanical parts.

• Resin: Used in SLA printers, offers high detail and smooth surfaces, ideal for intricate designs.

  
  

Printing technologies include FDM (Fused Deposition Modelling), SLA (Stereolithography), and SLS (Selective Laser Sintering). FDM is the most common and affordable, while SLA and SLS provide higher resolution and material options.

Understanding your part’s requirements will guide your choice. For example, if you need a strong, heat-resistant bracket, ABS or Nylon printed with FDM might be best. For a finely detailed model, resin printing could be the way to go.

PA12-CF Hinges

Tips for Designing Parts That Print Well

Designing for 3D printing means thinking about the process and limitations. Here are some practical tips to help your parts print successfully:

• Avoid overhangs greater than 45 degrees: These often require support structures, which can affect surface finish.

• Use fillets and chamfers: Rounded edges reduce stress concentrations and improve strength.

• Keep wall thickness consistent: Thin walls can be fragile, while overly thick walls waste material and increase print time.

• Design for orientation: Consider how the part will be positioned on the print bed to optimise strength and surface quality.

• Include holes and slots carefully: Holes may print smaller than designed, so adjust dimensions accordingly.

• Test with small prototypes: Print a scaled-down version to check fit and function before committing to a full-size part.

  
  

By following these guidelines, you’ll reduce the risk of print failures and get better results faster.

Bringing Your Ideas to Life with Custom 3D Printed Parts

Once your design is ready, it’s time to turn it into a physical object. If you don’t have your own 3D printer, working with a trusted service provider can make all the difference. They can help you select materials, optimize your design for printing, and deliver high-quality parts on time.

Check out our custom 3d printed parts services, we specialise in practical and efficient additive manufacturing solutions, we understand the needs of manufacturers, CNC shops, and engineering teams, helping you save time and cut costs.

Remember, the beauty of 3D printing lies in its flexibility. You can iterate quickly, customise parts to your exact needs, and produce solutions that were once impossible or too expensive.

Ready to Design Your Own Custom 3D Parts?

Designing custom 3D parts is a rewarding process that combines creativity with practical problem-solving. Whether you’re creating a prototype, a replacement part, or a unique tool, the right approach and tools will set you up for success.

Start small, experiment, and don’t be afraid to ask for help or advice. With each design, you’ll gain confidence and skill. Soon, you’ll be turning your ideas into reality faster and more efficiently than ever before.

Happy designing!