For efficient burning the door of a stove needs to be airtight, air for the fire is only allowed from below the fire, through a grille in the the bottom, and from the top, through an adjustable opening in the top of the door. They make the door airtight by fitting a more or less flexible glassfiber "rope", about 1 cm thick all around the door frame. When you close the door the handle presses the door against the frame, the rope seals off the fire chamber.
You need to replace that rope every few years. If air leaks in, the fire burns a lot quicker, but you will lose a lot of heat through the chimney. Test: a piece of paper between door and frame, close the door, handle thight. If you can pull the paper out easily you need to replace the rope, or fit a thicker one. It's ot expensive, about 10-15€, including a tube of heat resistant silicone paste to glue it in place, if necessary.
Engineer Jansen bought a kit, and carefully positioned the door on a sheer of cardboard as to not damage anything.Only, when he pressed on the frame to loosen the old rope it turned out that the little brass handle that controls the upper opening was touching the glass. And that cracked. (Damn! Blast! etc)
Down to the local stove shop in Turre, that was open till 14:00, according to their Facebook page. When the engineer arrived there, at 13:40, they were closed from 13:30. (Damn! Blast! etc)
The stove shop in Vera would look in their magazin for the proper size glass. After pressing them a few times they has a slightly bigger glass in stock. But it fit. And cost €100. (Damn! Blast! etc)
This glass is not glass, but a special ceramic material. No recycling: basura.
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