Quote Originally Posted by typhoon_driver View Post
I wouldn't be so negative. You learned a valuable lesson. Don't build a spinner from cast iron! It's too brittle and it failed right at the threads that you tapped in it (stress raisers). If that disk has been made from mild steel it wouldn't have had the same issues. My advice is to keep going with what you have and chalk this down to a lesson learned.
I've spotted a *thing* here, which may purely be chance-happening from the particular threads and post's I've seen. But there does seem to be lots of talk about mild-steel.

According to all common sense, spring-steel should be the better material for almost everything. So is that in fact not the case where combat is concerned? Or is it the price difference?