The twisted tube comes to a sticky end

This is what happened when I went to open that tube of white oil paint mentioned in an earlier post (Twisted tube) -- the head and top of the tube came clean off. It just came away in my hand with no effort or force at all. On the bright side, it's easier to get paint out of the tube now, and I've wrapped it in plastic film to prevent the paint from drying out.

Twisted tube

I'll have no camera for a week or ten days and will be unable to post updates to the series until the new one arrives. Meanwhile, this picture shows how not to design a paint tube/cap.  The tube is more than half-full but when trying to get the cap off, the tube twists in the opposite direction and eventually springs a leak. (I've only had it happen with this brand. Other similar-looking paints open normally).