I also like the Boba Maker method very much, with 4 bolts puttied in both 2 on the far sides and on the point where the mandibles meet the horizontal T. Unfortunately, I dont have a good picture on me atm.
Those pictures though look fantastic! very clean and professionally done, I gotta say. An interesting contrast to the rest of the helmet interiour which always looks quite makeshift
With this visor attatchment method I like, that it has the ease of screws, but at the same time provides some strength to the mandibles.
The visor then would probably have pre-drilled holes where the screws go?
The helmet is officially done! I had a lot of fun with this first paint up, there are some things I wish looked better but those are lessons learned to apply to future helmets! Thank you for all of the support everyone, time to apply for the 501st now! I am currently working on a ROTJ SE helmet so if you want to continue to follow my progress go check out that thread last photo shows my helmet (right) compared to the EFX helmet (left)