furnace, kiln or oven

Background: The State of an Art?

Over the last three decades, bloomery iron smelting has moved from the largely theoretical to the practical. Although there were certainly earlier attempts via experimental process to build workable furnaces, most of these attempts were basically unsuccessful, at least in terms of actual iron production. Early researchers too often undertook (or at least only formally reported on) limited test series (one or two attempts) and many concentrated far too much on slag, not on the production of metallic iron itself.

Experiment Background

Unfortunately, no intact furnaces survive. Only the base plates for these potential furnaces and an additional scattering of sherds exist in the archaeological record. Thus, the shape of the body, lid, and chimneys must be inferred and then tested through experimental bead production.

Part of the reorganisation of the archaeological open-air area at Asparn are plans for a remaking of the Iron Age workshop area. The construction of an Iron Age smithy and a glass production furnace are also being planned. As is widely known ‘glass can be made out of quartz sand, potash and lime’. But is it as easy as that? It is therefore legitimate to discuss here the experimental efforts involved in its production.