It seems like I have resolved this before but I can't figure it out this time. I have a lot of little line segments and arcs that I have copied, rotated and translated all in a snap grid so that there should be zero distance between their endpoints. When I select all for a closed polygon I want to join and try to join, I still have individual pieces. How can I get the segments and arcs joined? I have tried different join tolerances, reversing a part of the chape and trying again and creating offsets and open offsets of zero distance. They wouldn't join either.