3D Printed PCB! (sanded copper tape over printed model)

Introduction

In this tutorial, we will guide you through the process of creating a 3D-printed PCB (Printed Circuit Board) using PLA filament, resin, copper adhesive tape, and sandpaper. This method is not only innovative but also accessible, utilizing open-source software like Inkscape and FreeCAD. Whether you’re a hobbyist or a professional looking to expand your skills, this guide will help you achieve a functional 3D-printed PCB.

Step 1: Design Your PCB

• Install Software: Download and install Inkscape and FreeCAD, both of which are free and open-source.
• Create Your Design:
  • Open Inkscape and set up a new document.
  • Use the drawing tools to design the layout of your PCB, including the placement of components and traces.
  • Export the design as an SVG file for use in FreeCAD.

Step 2: Prepare the 3D Model

• Import into FreeCAD:
  • Open FreeCAD and create a new project.
  • Import the SVG file you created in Inkscape.
• Extrude the Design:
  • Select the 2D shape and use the “Part” workbench to create a 3D model by extruding the shape.
  • Adjust the thickness according to your requirements; typically, a thickness of 2-3 mm works well for PCBs.
• Add Mounting Features: Ensure there are holes or features for mounting components if necessary.

Step 3: 3D Print the Model

• Prepare the 3D Printer:
  • Set up your 3D printer and load the PLA filament.
  • Use slicer software to convert your 3D model into G-code.
• Start Printing:
  • Print the model with the appropriate settings (layer height, infill, etc.) for your specific printer.
  • Allow the model to cool and remove it from the print bed.

Step 4: Apply Copper Tape

• Gather Materials:
  • Obtain copper adhesive tape and sandpaper.
• Preparation:
  • Sand the surface of the printed PCB gently to ensure better adhesion for the copper tape.
• Apply the Tape:
  • Carefully place the copper tape over the designed traces, ensuring they are continuous and well-connected.
  • Use a craft knife to cut the tape as needed for precise placement.

Step 5: Final Assembly

• Solder Components:
  • Once the copper tape is applied, solder the electronic components onto the PCB where designated.
• Testing:
  • Test your board for continuity using a multimeter to ensure all connections are secure and functioning.

Conclusion

You have now successfully created a 3D-printed PCB using PLA filament, copper adhesive tape, and basic tools. This method not only simplifies the PCB creation process but also allows for unique and customizable designs. As next steps, consider experimenting with different designs or components, and share your projects with the maker community to inspire others!