From the course: Tinkercad: Modeling Custom Designs for 3D Printing

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Adding shapes to avoid overhangs

Adding shapes to avoid overhangs

- Now, the shapes in our base are complete, but our design is violating one key rule for desktop filament based 3D printers: avoid overhangs. Now, to print this without support material, we need to make some modifications to this top cylinder here. So, we're going to do that by adding an upside down cone, but first, I'm going to need the exact measurements of the cylinder. So, I'm going to drop a work plane on this face here, on the bottom; I'll use the "w" key, it's the hot key for the work plane tool. Then I'll grab the ruler tool and bring it into the work space. I'll click on the cylinder to get the dimensions. Now, these dimensions have really small, awkward increments, so I'm going to make some subtle changes, I'm going to make this 93mm, and this one 47mm, just so that it's easier to remember. I'm going to make a not of that to myself, 47 by 93. Now, I can exit and dismiss the ruler, and I will bring a cone into the work space. It already came in upside down, which is perfect…

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