Gauntlets are the toughest parts of armor to make. The articulation has to be made to fit the user, for the most freedom of movement and even more important, to limit the movement so that you cannot hyper extend the human joint inside the metal parts.
Overlaps of the different parts, if done right, should not dig into the user, and should not allow the metal joint to come apart when flexed.
The rivet holes have to be oriented to allow articulation, and it's not the angles you'd expect.
I have one signed copy on the shelf, and another ( much dirtier ) one in the shop.
I also have the collected works of "The Hammer" the armor making guild's news letter.
Paper patterns are Very useful when getting ready to start cutting metal with the Beverly shear and ( cheating ) my buddy's plasma cutter. ( although my buddy seldom uses the plasma cutter since he got the $600 electric bill one month )
Dishing metal is an easily learned art. Raising metal ( a VERY different thing ) takes a bit of practice. Amazing you can do most of it with hammers and a few simple anvil tools. ( ball stakes, etc. )
One of the most often used tools is the bottom end cut off a corroded acetylene tank, then polished into a shiny bowl. ( and yes, you get weird looks at the welding supply shop asking for a shot and now scrap tank... )
My personal experience hasn't gone much beyond torching and welding, casting and bending, for mechanical projects, but I've been interested in armor and blades since high-school. (I dabbled in studying English and German/Austrian swordsmanship). Somewhere on the "to-do" list is a forge and anvil.
Smithing enabled men to accomplish work on a whole new level 6 or 700 years ago, I think it would still prove valuable to the self-reliant farmer or DIY junky today.
One of these days I'll get a proper (home made) blacksmith shop setup. And I will make batarangs. To complement the carbon fiber/leather Dark Knight suit I also plan on getting to. When I have freetime (the light at the end of the tunnel)