![]() One common cause for non-manifold geometry occurs when an artist extrudes a face, moves it, decides against the extrusion, and attempts to undo the action. This situation ends up being confusing for 3D printing equipment.Ī non-manifold model will not print correctly. The result is two identical pieces of geometry directly on top of each other. This problem can occur when a face or edge is extruded but not repositioned. Non-manifold geometry is defined as any edge shared by more than two faces. If you're vigilant during the modeling process, this step should be a non-issue. Create the opening without breaking the actual topology of the mesh-when you open a hole, it's important to bridge the gap between the inner and outer shell. Create an opening in the bottom of the model so that excess material can escape.Most vendors have a minimum thickness that they specify on their site. Thicker walls are more durable but also more expensive. Your model should now have an "inner shell" and an "outer shell." The distance between these shells will be the wall thickness when your model prints.Make sure no overlapping geometry was created during the extrusion and fix any issues that may have arisen. If you're using Maya, make sure you have the option keep faces together checked. Either a positive or negative extrusion works, but negative is preferable because it leaves the appearance of the exterior surface unchanged. ![]() Extrude the faces along their surface normal.Select all the faces on the surface of the model.Your model will not print hollow by default.Įven though the model appears to be a hollow mesh while you're working in your 3D software application, when the model is converted for printing, it is interpreted as solid unless you prepare it otherwise. ![]() Most 3D print vendors price their services by volume using cubic centimeters, which means it's in your financial interest to see that your model prints as a hollow figure instead of a solid one. Special Note: Kickstarter recently disabled remote embedding for images on project pages, so embedding code doesn't work on project pages (yet) - just everywhere else.A solid model requires significantly more material to print than a hollow one. Here are a few quick snippits of code you can use to embed your personalized widget on your website, in your blog, and even on your favorite forum.īBCode for forums Copy BBCode ![]() Help your backers reach your daily goals and help others see how you're doing. ![]()
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