No.32 Scope mount

[Peter Laidler]

Big Duke, the material spec for the original brackets is malleable whiteheart (PURE) or blackheart (impure) cast iron.

I seem to remember during my apprenticeship that you can braze it (that's why I was thinking hard silver solder might be suitable....) providing that the whole item is deep cherry red. The metallurgy labs explained why........

I remember it being discussed at some length overcracked/snapped/broken MGB GT V8 exhaust manifolds but that's going off the subject a bit I suppose