Felix had designed three improvements to the case fastening before the carpenter arrived.
The first required a new copper loop. The second required two loops and a small ward. The third had developed a warning light.
He looked at the drawing and felt a familiar unease.
On Earth, this was usually the point when somebody asked whether the improvement could also keep attendance.
A man carrying a wooden tool chest stopped outside the guest-house workroom.
“You wanted a hinge?”
Felix covered the drawing.
“Possibly.”
