Modifying an Old Coolus E?

[PhilusEstilius]

I have over many years made helmets from spun bowls and they are made on a lathe which has a former fitted, I've not yet seen it done but from info' I've been given the disc of metal is forced over the former by a lever that has a ring and with some types of metal there has to be a bit of annealing at stages.

There has I think been evidence from some originals that show ring marks to indicate that this is how some have been produced, I'm not too sure but I think some of the types may have been Montefortino.
It is of course a process which makes the helmet circular and not eliptical as per those that have been raised, there are however those such as myself who consider that many could well have been Drop Forged. For if the Romans could hammer piles into a river for a bridge I think the same method could have also been used by Fabrica for metal work as well.

Infact where I have given an earlier post about Coolus types H.R.Robinson does I think proove as I have myself that these types were beaten out from the inside in concentric circles for they have a strong top area with a strong rim and neck piece but the weakness is in the curve or 1/3--1/2 way up the bowl.