I have made a spiral coil using 90 degree arcs adjusting the offset radius and pasting/rotating as I go. I have adjusted the nets to be all the same, like 1 wire. Problem I am seeing is very long times to complete whatever easyeda does. A panel opens asking to exit or wait.  Took a long time to complete the single layer coil. I've waited over an hour hitting the wait button.... I want a total of 4 layers, possible more but this waiting is crazy