More problems with Yale superior

[Ian platt]

Had a customer order a Yale superior  cut to code on futura we’d been having a few problems with  the machine   Cut the key customer came back a week later with the cylinder  and our key snapped off inside the lock  he said he had to call out a locksmith  who also couldn’t get the key out  so he snapped off the head and replaced the cylinder  as the key we had cut was working ie turning and opening door  there was a thumb turn on inside  but wasn’t a  factory fitted one it was an adapted one  like a disability aid  I’ve stripped the lock and attached some photos of what I found  there is damage to one side of the track at the  tip of key  any thoughts to weather this is a lock fault or key cutting fault ?

[Flash]

Why did he feel the need to snap the key off? couldn't he remove the lock intact if the key was turning?

[Count Muppet]

probably had the thumb turn stopping it coming out through the front, and the head of the key stopping it coming out through the back?

[da miller]

seen this before, thought it 

was just a poor copy blank were metal was slightly weak

when turned unfortunately  paid the price

[Ian platt]

Don’t know why he snapped it off   I told him i would  have got it out  however he left the lock with me and there was no way it would come out I Had  to strip the lock and knock it out with a hammer and punch before it wound come out   We have since cut another key  for the lock which also worked but also stuck in the lock we managed to get it out  we found that after filing the front end of key it worked and came out easily  so I’m not sure whether it’s  key cutting problem or a lock problem