Open your drawing in Google Sketch
You've finished your Sketch Up drawing and now ready to make it a STL file. Setup a file to save in, possibly labeled STL and easy to locate like on the desktop.
Click quickly on the drawing three times, it should be highlighted in blue.
Upper left hand corner, click File and then midway down, click Export STL.
Popup menu will appear with default in millimeters, Click Export.
New save popup will appear, find your STL file to save in and click Save.
Now that you have a saved STL, on to the next step, repair the drawing(STL).
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