Just wanted to say thank you for the plugin. Even if I don't use it much it's been great fun playing with it the past few minutes!

You can use the 'weld' plugin ( http://www.smustard.com/script/Weld ) to join arcs together, infinitely, before using this plugin; helping to create very complex shapes in the same number of clicks (4 base curves still apply!):

Another couple:

Hi, I'm an architecture student... these tools will really helped me visualise my ideas! They are similar to Rhino's 'Panelling Tools' plugin, but this is not free. I've had a play with extrude tools for an hour or so... I'm addicted! Thanks TIG: