Instructables
Picture of how to get lego bricks in tinkercad
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lego compatible bricks in tinkercad  1go to thingiverse.com search lego compatible look for something you like once you found a lego brick download it 2go to autodesk 3d print utility and  open your lego brick autodesk 3d print utility will repair your 3d files now save it as stl 3go to tinkercad.com   import your stl file     now you are done