Let's Make Robots!

PCB etching DIY circuit board pigs old timers

Do it yourself PCB experience

My question is for all the people who have etched their own circuit boards (BOA, JIP, Fritsl?, Others?).
I would like to know:
1. how many times you have made your own circuit boards.
2. how long does it take. Is it faster than wire-wrap or "free-form" soldering?
3. how many boards have you made in a run?
4. have you ever tried commercial sites? how would you compare vs doing it all yourself?
5. what is the start-up costs?
6. what do you do with the spent chemicals?