I'm not a happy bunny when it comes to the German metal moulds , it took 5 attempts to get the above mortar cast to an acceptable standard - its probably just me as other people seem to be able to cast from them okay !. Here we see a test firing of the aforesaid mortar for the benefit of the Comte Du Fru-Fru and his guest Voltaire (who of course knows a great deal about them already )
The mortar is loaded carefully and is ready to fire (maybe the audience should stand further away ?!) I mounted it on a balsa wood base - the mortar bombs come with the mould.
A successful if alarming firing !