I've been caught out again by the deadly combination of lead and PVA glue.
This is like a silent killer that lurks within your models, forgotten about, until it slowly, remorselessly, tears it apart.
Such as Himself discovered was happening to my scratch built cherry picker wagon.
I'd forgotten I'd even filled part of the chassis with liquid lead to give it some weight when I built it.
Fortunately, as you can see above, the main body of the wagon has come off in one piece and although the chassis is broken in two pieces it was able to be glued back together.
The wagon is now back in service on Dduallt.
The question is, what other stock is fitted with this kind of time bomb?