Yes, I have thought about this alot this week. I am hesitant and scared. Why? I don't want to make him mad and this will for sure. He is blowing off his child support. It should be my next move. I have heard its an easy process to do.
Why do you care about making him mad?! He obviously is unconcerned about making you mad....or even providing the basic support for his daughter. You need to go file the papers so that it is no longer an issue. I think it will save you a lot of heart ache in the long run. I have read your entire thread, and your X is one who will forever use the money to try to retain some control. If it is relegated to a government agency, then he can no longer use it as a weapon or a sympathy ploy, or anything else. Providing for his daughter should be his first priority, but obviously it is not. Take away the option.
"You can't stop the waves, but you can learn to surf." Jon Kabat-Zinn