I'm going crazy trying to figure this out! I've been trying to design simple scroll work patterns in Illustrator by hand-sketching scroll work pieces using the Illustrator brush tool. I then copy/paste the pieces and reflect/rotate them to form the scroll work. Every time I try to export an image as an SVG then open it in Tinkercad, diagonal lines are added after it's imported. On the Tinkercad import preview, no such lines exist--only AFTER the import. Here are a few images outlining my process. First one is an image from my simple pattern in Illustrator. Next one is the Tinkercad import preview. Last one is the actual import. I'm going CRAZY! Please help!!