CNC (Computer Numerical Control) machining and 3D printing are two of the most revolutionary technologies in modern manufacturing. While CNC machines typically involve subtractive manufacturing (cutting material away from a block), 3D printing is an additive process (building material layer by layer). Carbide Create, a popular software for CNC machining, is primarily designed for 2D and 2.5D operations. However, with some creativity and the right techniques, you can use Carbide Create to assist in creating 3D printed objects. In this blog, we’ll explore how to use Carbide Create in combination with CNC techniques to produce 3D models suitable for printing or machining.
What Is Carbide Create?
Carbide Create is a CAD/CAM software developed by Carbide 3D. It’s widely used for creating toolpaths for CNC routers and mills. The software is user-friendly, especially for beginners, and provides tools for designing projects and generating G-code for CNC machines. While it’s not a traditional 3D modeling tool like Fusion 360 or Blender, Carbide Create can be used creatively to design 3D components.
Understanding the Basics of CNC and 3D Printing
Before diving into the process, let’s clarify the differences and similarities between CNC machining and 3D printing:
- CNC Machining: A subtractive process where material is removed from a solid block using tools like mills, drills, or lathes. It’s ideal for creating precise parts from wood, metal, or plastic.
- 3D Printing: An additive process where material is deposited layer by layer to build a part. It’s commonly used with materials like PLA, ABS, or resin.
While Carbide Create is primarily for CNC, you can use it to create 3D designs that can then be exported for 3D printing or to assist in preparing toolpaths for machining molds or prototypes.
Step 1: Plan Your Design
The first step in any CNC or 3D printing project is planning. Think about the object you want to create and determine whether it’s better suited for CNC machining, 3D printing, or a combination of both. Here are some considerations:
- Complexity: If your design has intricate details or overhangs, 3D printing might be a better option.
- Material: CNC machining is ideal for hard materials like wood, metal, or acrylic, while 3D printing works best with thermoplastics.
- Purpose: If you’re making a prototype, 3D printing is faster and more cost-effective. For final products, CNC machining offers superior durability.
Once you have a clear idea of your design, you can move to the next step.
Step 2: Create a 2D Design in Carbide Create
Carbide Create excels at creating 2D and 2.5D designs, which can be adapted for 3D printing. Follow these steps to create your design:
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Open Carbide Create: Launch the software and set up your workspace. Specify the dimensions of your stock material (the block or sheet you’ll be working with).
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Draw Your Design: Use Carbide Create’s drawing tools to create the outline of your design. For example:
- Use the rectangle, circle, or polygon tools to create basic shapes.
- Combine shapes to form more complex designs.
- Add text or engravings if needed.
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Adjust Dimensions: Ensure your design is scaled correctly for the final product. Double-check the dimensions to ensure they fit within your machine’s capabilities.
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Save Your File: Save your design as a project file so you can edit it later if needed.
Step 3: Add Toolpaths for 2.5D Reliefs
While Carbide Create doesn’t support full 3D modeling, you can create 2.5D reliefs that simulate a 3D effect. Here’s how:
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Assign Toolpaths: In the "Toolpaths" tab, assign toolpaths to your design. For example:
- Use a pocket toolpath to carve out areas of your design.
- Use a contour toolpath to cut along the edges of your design.
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Set Depths: Adjust the cutting depths to create a layered effect. For example, you can assign different depths to various parts of your design to create a stepped relief.
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Simulate the Toolpath: Use the simulation feature to preview how your design will look after machining. This step ensures your toolpaths are correct and won’t cause errors during machining.
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Export G-Code: Once satisfied with your design, export the G-code. This code will control your CNC machine and can also be adapted for 3D printing.
Step 4: Convert the Design for 3D Printing
If you want to 3D print your design, you’ll need to convert it into a format compatible with 3D printers. Follow these steps:
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Export as SVG or DXF: Carbide Create allows you to export your design as an SVG or DXF file. These formats can be imported into 3D modeling software.
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Import into 3D Modeling Software: Use software like Fusion 360, Blender, or Tinkercad to convert your 2D design into a 3D model. Import the SVG or DXF file and extrude it to add depth.
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Add Details: If necessary, add more details to your 3D model, such as fillets, chamfers, or overhangs.
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Export as STL: Save your model as an STL file, which is the standard format for 3D printing.
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Slice the Model: Use slicing software like Cura or PrusaSlicer to prepare your STL file for 3D printing. Adjust settings like layer height, infill density, and print speed.
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Print the Model: Send the sliced file to your 3D printer and start printing.
Step 5: Combine CNC and 3D Printing Techniques (Optional)
For some projects, you may want to combine CNC machining and 3D printing. Here are a few examples:
- Molds for Casting: Use CNC to machine a mold, then use the mold to cast a 3D printed material like resin or silicone.
- Hybrid Parts: Machine a base part with CNC, then 3D print additional components to attach to the base.
- Prototyping: Use 3D printing for initial prototypes and CNC machining for the final product.
By combining these techniques, you can take advantage of the strengths of both CNC and 3D printing.
Step 6: Post-Processing
Whether you CNC machine or 3D print your design, post-processing is often necessary to achieve a polished final product. Here are some tips:
- Sanding: Smooth out rough edges or surfaces with sandpaper.
- Painting: Apply paint or finish to enhance the appearance of your part.
- Assembly: If your design consists of multiple components, assemble them carefully.
- Testing: Test your part to ensure it meets your requirements.
Tips and Tricks for Success
- Start Simple: If you’re new to CNC or 3D printing, start with simple designs and gradually tackle more complex projects.
- Use High-Quality Tools: Invest in good-quality tools and materials for better results.
- Experiment with Settings: Don’t be afraid to experiment with cutting depths, speeds, and feeds in Carbide Create to optimize your design.
- Learn from Mistakes: Mistakes are a natural part of the learning process. Use them as opportunities to improve your skills.
Conclusion
While Carbide Create is primarily a CNC software, it can be a valuable tool for 3D printing when used creatively. By following the steps outlined in this blog, you can design, convert, and produce 3D printed objects or combine CNC and 3D printing techniques for hybrid projects. Whether you’re a beginner or an experienced maker, the combination of CNC and 3D printing opens up endless possibilities for creativity and innovation.
So, fire up Carbide Create, unleash your imagination, and start bringing your ideas to life! Happy machining and printing!