Mid Cornwall Minerals
 Mid Cornwall Minerals          

 The Casting of a 28Lb Cornish Ingot in the year 2020

 

 

 As the title suggests, our plan to cast a full size Cornish ingot has at last started to come to fruition, many years of producing tin from our own source and finding time to produce such a unique item has at last arrived.

As you will see from the header picture there is no such thing as a standard size 28 Lb Cornish Tin Ingot so we have picked the shape of the one on the far right. 

The mold has been designed, a large quantity of true Cornish tin has been produced and the loan of an original Cornish Lamb and Flag  hot mark and one of my own design to stamp and  mark the ocassion in 2020 are almost ready.

This page will be updated soon to show the projects progress.

 

The items required to cast and stamp our 28Lb ingot are shown here.

The red pattern will be used to form the sand mold and 28Lbs of clean tin that has been slowly processed over the years is now ready to melt and pour. 

An original and unnamed Davies Lamb and Flag hot mark has been  kindly loaned to me, similar designs are found on all true Cornish Ingots.

The wooden pattern with the family name, the reverse pattern and brass hot mark stamp with the family name are ready to incise the ingot once poured.  The patterns and foundry work were all produced here on site and trial runs on molten tin worked perfectly and have shown a clear sharp incised mark.

In fact we eventually decided to produce two hot marks, the Ponts Mill mark will be used on the 28Lb ingot as the tin being used is site specific to this location at Blowing House Farm.

The Luxulyan hot mark will be used to mark a few smaller ingots made from stream tin sourced from the wider Luxulyan area.

 

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Copyright. Peter Trebilcock