In this course we cover some useful methods for creating curved bodies. We learn how to reference a sphere in order to create a curved extrusion. We briefly jump into the Patch environment and learn how to make a custom surface from two spline curves. We also cover how to add curved text to your model. Apply these methods while modeling a beautiful fully ready to 3D print Wonder Woman Tiara.
The second part of the course we will review our model and look at what design changes we need to make in order to optimize it for 3D printing.
By the end of the course students will have learned the skills necessary to design custom curved geometry in their models. Students will also have learned useful skills in preparing their prints for 3D printing.
In this lecture we import an image of our model into Fusion 360 where we calibrate, move, and rotate it into position. We then use the sketching tools to create our model as we reference our canvas.
We also learn how to use the shortcut toolbox
We extrude our first curved shape by referencing a sphere that we bring into our workspace. Then we use the combine tool to join several shapes into one body.
We reference the attached canvas to create our second sketch which will be the star on the tiara. We'll cover several sketching commands such as the mirror tool, apply sketch constraints, and copy and paste sketch entities.
We extrude the star to have a curved shape following the same principle of referencing the sphere.
We use the spline tool to create two splines that we will then sweep to give us a unique curved surface that we will use to split the star.
We briefly jump into the Patch environment to use our spline curves to create a curved surface.
We modify the overhangs on the star points so that the model is able to print successfully. To do this we must go back into the sketch and modify it. However, we have to do this in a careful way so that we do not destroy our existing model. By using constraints along with new geometry we can amend our design in a way that will allow it to successfully update our 3D model.
We have to make some design changes in order to allow our model to print successfully. We also add a brim to the tiara to help it adhere to the bed on a 3D printer.
We add chamfers in areas where this will facilitate in better angles for 3D printing. It also adds a nice look to our model.
When angles are too shallow it can lead to failed prints. We go back into our sketch to modify some shallow angles in order to create geometry that can be self supported when 3D printing.
A nice touch to any model is to customize it with the person's name. In this case we add engraved text to the inside of our tiara and make it follow the same curved pattern.
You will want to design your model in a way that when you export it for 3D printing, it will lie in the correct orientation. We learn how to orient our model in Fusion 360 so that it will always export with the correct orientation.
Once you have designed and printed a successful model you'll want to take to the next step and give it a finished look. I briefly walk you through my post processing techniques to show how I turn my 3D prints into a finished and polished model.
Vladimir Mariano is cofounder and president of the Fairfield County Makers’ Guild, an independent makerspace in Norwalk, CT and founder of CT Robotics Academy. He teaches 3D printing and design at the makerspace as well as electronics and programming classes. Vladimir also teaches several maker related classes at local libraries and schools and was the coach for a local robotics team. He has a degree in Geology from West Virginia University and a RobotC Programming Instructor Certification from Carnegie Mellon Robotics Academy.