I haven't had to dig one out of the wall or ceiling, yet, but have had a couple sail across the room. I use a BBQ lighter to heat ferrules and tip tops up. On a graphite or 'glass rod, you are not as likely to get a flying ferrule as most of those ferrules are open all the way through. They sure will launch off the end of a section of bamboo, though!

I am working on a tutorial for making spigot ferrules and how to measure the sections out so everything is still the same length when you are all done. I have the text portion pretty much done but need pics. That will have to wait until I need to whack up another one piece blank.