Somebody yesterday on the Oldhammer Community page in Friendface posted an interesting question.
“Has anybody made replacement doors for the Mighty Fortress?”
The Mighty Fortress was a polystyrene castle made by Games Workshop in the mid-eighties.

Due to the age of this many of the plastic doors have disappeared or have been broken.

Some people on the Oldhammer page suggested 3D printing. This got me thinking.
Why can’t I laser cut replacements?
I dug my Mighty Fortress out and I used a piece of scrap 3mm MDF to guage sizes.

It fitted perfectly.
Next project.