11.04 CNC and 3D Print Project Fabricated

Assignment Deliverables

1. Completed CNC Project following the minimum design requirements

Minimum Design Requirements

• Use 3/8", 1/2", or 3/4" plywood
• Minimum of 1 pocket cut
• Minimum of 1 contour or through cut
• Minimum of 2 pieces cut from CNC
• Create a joint or connection between the 3D print and the CNC milled piece(s)

Assignment Overview

Before starting your project it is important to see what types of related designs have been made. This can give you inspiration and new ideas for your project. You do not research other designs to copy them but to find out solutions that others have made. You can then take inspiration from those solutions and create your own designs and Concepts. This is an important part of any creative process.

At a minimum do an image search for the following:

• cnc projects  
• cnc 3D printing  
• cnc plywood  
• cnc fusion 360  
• cnc furniture  
• cnc design  

Now that you have made a test 3D print and are more familiar with the opportunities and challenges of 3D printing, we will tackle specific design challenges using the 3D printing fabrication process in combination with CNC milling.

Design Challenges for Inspiration

Often creative work has arbitrary restrictions on the creative process. There may be challenges based on material availability, budget, time, aesthetic criteria and countless other constraints on what you can make. Part of your job as an artist and designer is to work around these restraints and still create new and compelling creative works of culture. For this project choose one or more of the design challenges below. How can you meet the criteria of the challenge(s) and still make unique and exciting objects?

CNC Milling Design Challenges

• Support the weight of a person or the intended item
• Use more than 1 type of joint - Combine lap joints with mortise and tennon joints or use a custom 3D printed bracket to make joints at an angle
• Have a considered and designed top surface, this could have engraving or decorative joints
• Use all of the space of the provided plywood

3D Printing Design Challenges

Make an extension of the body

Do you need a helmet? A headband? What about flexible knuckle guards? Does your hand need and custom fit extension for scraping ice off of windshields? To complete this challenge, articulate a problem to solve with a body extension. This can be functional, decorative or both. Measure your body or the target person’s body and use these dimensions as guideposts when modeling in Fusion 360. 3D scanning and / or Photogrammetry are great ways to get an accurate and scaled digital 3D mesh of a body part to model from.

Use a Print in Place Flexible Joint

With 3D printing objects can be created that would not be possible with other fabrication techniques. One such method is a print in place hinge or joint. Print it place means that the two separate objects are printed “in place” or as is on the 3D print bed. Once completed the two parts are forever locked together. Can you make a movable ball and socket figure or snake? What about designing an adjustable cellphone tripod holder for documenting work? Hinges for a box lid? Print in Place Hinge Video Tutorials Version 1   , Version 2  

Have an interlocking lid

Boxes are great. What is better than a box? A box with an interlocking, perfectly fitting lid is better. Even better is a box with an interlocking lid that has a hinge and a clasp to keep it closed. Design a custom box that has a lid. What should it contain? Think of things that don’t have pre-made boxes. Is there a board game that you play that could use a box to contain specific pieces?

One dimension over 11”

Because of the nature of 3D printing, prints are often small. For this design challenge you need to make a 3D print with at least one dimension over 11”.  The interior build size of the Bambu X1 Carbon is 256mm x 256mm x 256mm Getting a print over 11” in one dimension is running right up to the limits of the build volume. What about putting the print in diagonally? Can multiple pieces be connected together for a print that is larger than the machine itself? What other creative ways can you increase the size of y our 3D print?

Sculpt in a 3D Sculpting Program

Use Blender , Mudbox, or other 3D sculpting program to make a detailed 3D sculpture that would not be possible with polygon modeling. Export the sculpture as an .obj file for further import and parametric modeling in Fusion 360 or export as an STL file for direct printing. If you use this technique of digital sculpting, you should intentionally make something that could not be make with polygon modeling or solid parametric modeling alone. Consider combining sculpting techniques with a parametrically modeled base or support.

Process

Cut CNC Parts

1. After your toolpaths are reviewed and confirmed and you have a reserved slot for the CNC machine, prepare your plywood and cut out the pieces for your project.
2. Use the router table to remove tabs.
3. Sand down rough edges.

3D Print

1. Confirm that your 3D print has proper fit and clearance.
2. Print your 3D Print.
3. Remove any support materials and paint as desired.

Final Assembly

1. Assemble your project.
2. You can use glue, fasteners as well as any other tool in the shop.

Grading Rubric