For a number of years I have been making
items from locally produced tin mostly for Christmas presents.
This is a 19th century miner of the St Just area made from tin produced from an
outcrop. Over his left shoulder are a bundle of hand drills and in his right hand
his hammer with a shortish handle suitable for the one man drilling technique
used in the narrow lodes of the area. At the end of the day tin from China is
the same as tin from Brazil or Cornwall but there is something very satisfying
about doing the whole thing from finding the tin ore to smelting to casting or
constructing the finished item. Although tin melts easily at about 232 C smelting
from the oxide requires a temperature of about 1100C. This tankard is made from
tin mined from an outcrop the handle and base are centrifugally cast into vulcanized
rubber moulds and the side wall is constructed from sheet made with a mini rolling
mill.
The seahorse is a brooch again from outcrop mined tin, this is centrifugally cast
into a vulcanized rubber mould.
The engine house night light holder is from the same outcrop as the other items
it has a cast base the side wall is constructed from sheet and the engine house
is cast the components were joined by soldering. Pure tin is very soft and difficult
to cast so I tend to leave the metal fairly impure about 99% small amounts of
various impurities have a considerable hardening effect and improve the castings
by extending the freezing range.
We have now started to produce some of these sorts of items in lead free pewter and have a growing range of designs in Cornish tin visit the tintags website to view the products.
More
items made from Cornish tin (Geevor Miner and a small bowl made from Geevor
tin)