I was going to put this up two weeks ago, but forgot amongst all the hassle. So here it is as a taster for my next post.
It is nearly time for my annual pilgrimage to be a Tudor at Kentwell hall in Suffolk. This year, like last year, I am running the foundry. This year we have 4 of us, which is a good start, and three of us have prior experience.
So, what I want to try and cast are:
Lead spindle whorls, medieval and tudor date, with 6mm and 10mm internal holes.
Pewterbuckles and suchlike.
A bronze mortar and pestle.
Bronze seal matrices and purse bars, using the lost wax technique.
More complex but interesting things I might try include casting into tin oxide to make buckles, but also to try and make bronze moulds for making a seal matrix or bullets or suchlike. Which involves embedding the patron or sphere in the tin oxide on one half of the mould, and then casting the bronze into the other half of it in such a way that I have a lump of bronze with a shape like a seal matrix in it. Then I can bang out dozens of clean, good seal matrices.
This idea courtesy of the Historical Metallurgy society AGM and conference, where Kevin Leahy mentioned a bronze mould for casting seal matrices.
It is really nice to have actual confirmation of bronze moulds existing in the medieval period, and likely having been used for casting bronze or lead objects. I’ve been investigating casting for years but moulds really do not survive much at all.
We will also try to make a bell, since one of my co-workers is a campanologist, using sand casting and maybe using clay, it all depends on what we use as an original. I don’t have a bell, but there are some still on the foundry.
It should be quite a busy week, it all depends on the weather and how much charcoal we have.