3d modeling: The Cube

Goals:
1. Practice measuring in millimeters using a caliper.
2. Understand what tolerance means for measurement and 3d printing.
3. Transfer these measurements to a 3d model that will hold your assigned cube.

Part 1: measure and record

1. Each of you will be given a handout and a numbered cube.
2. The cubes are NOT exact cubes and there may be differences in measurement from one cube to the next.
3. Write your name and cube number on your handout.
4. Treat the numbered side of your cube as the top side.
5. Measure each side of your cube twice in millimeters.  Record the first and second measurement for each side on your handout.

Part 2: create a base shape

    1. Start a new design in Tinkercad.  Name your design like this: (your last name) cube number. Example: Milstead cube 6.
    2. Drag over a cube shape.
    3. The cube shape is a cube measuring 20mm.  Don’t resize this cube.

Part 3:  
1. Drag over a cube shaped hole in Tinkercad.
2. Resize the cube hole to include your wooden cube measurements PLUS a tolerance of .5 millimeters.  Example: cube measures 13.2mm on one side. Add a tolerance of .5 (13.2 + .5=13.7).  Make that side 13.7mm.
3. Center and merge the cube hole into the cube shape.  Make the top of the cube hole flush with the top of cube shape.


4. Group the shape and hole.
5. add a 4mm hole into the bottom of your cube shape.
6. Add your initials to one side of the cube.  Make sure that your initials are blended with the side but don’t push into the hole.
7. Add your assigned cube number to another side of the cube.  Make sure that the cube number is blended with the side but doesn’t push into the hole.

 

What do you turn in?  Complete step 1 and step 2.
1. Canvas: a screenshot from Tinkercad of your finished design.  How to take a screenshot in Windows.
2. For printing: upload the STL file of your design to this Google Form. 

Here’s how to convert files to STL:
-in Tinkercad click the EXPORT button in the top right hand corner. Choose STL as the file format. Pay attention to where the file downloads on your computer. -make sure that the file has your last name (like milsteadkeychain.svg). No name=no 3d print.

When you are done click here to submit your design.