I've tried searching the forum for something similar but can't find anything. Perhaps I'm not using the correct keywords or tags. I'm designing what I consider to be a basic linch pin. It has a 'thumb tab' for easy insertion and removal. I thought I'd start my part with the thumb tab but when I attempt to put it in any orientation whereby I can sketch it to scallop it out to make it easy to grip in the real world I am unable to sketch in the graphics area. What have I done wrong? Have I chosen the wrong plane to start with?
I have attached the actual part here in the post (if you want to see what I've actually done) as well as included some screen shots to show my intentions.