Abstract: A kiln for curing or drying articles has a heated chamber having at least two wall sections which are formed by two vertical panesl which rotate as part of a roundabout device. This may have other panels which divide the roundabout into a desired number of sectors. Within each sector are article support means, so that the articles may be loaded outside the kiln and brought inside it by rotation of the roundabout. The panels seal the chamber at their edges so as to minimise heat loss.