I've made quite a few springs of all types over the last 40 years and wonder about him making the claim that the springs are CNC milled from a solid billet which is required if there is no bend back. It can be done but as far as I know none of the originals where made from a solid billet with no bending involved.
I totally agree about cast spring reliability and the stress put on bent back flat spring stock but that is the reason we draw temper and radius corners, to relieve stress and work checking. I'm also not sure I believe the whole molecular grain alignment/ mis-alignment theory from working steel, I've been hearing about for decades either. Seems to me that properly heat treated ,forged springs from certified flat spring stock, hold up very well,. Some of them have been going for a couple of centuries that are far inferior alloys to what we have now days quality wise.
I very much like the idea of a pinned sear bridle.
I wonder why he doesn't use a stirup-ed main spring which is/was a technological step forward in spring fuction efficiency , with all the other high end mods he has put into his lock.
Over all I'm really impressed with the quality he has put into this lock which appears to be one of the best out there ! Any idea of the cost for such a lock ?
