Re: Steampunk Ironman Helmet WIP - I'm going to cutout the Faceplate TODAY!
Thanks for your patience. Last night was LONG, but I'm thrilled with the outcome!

:thumbsup
I'm not sure how helpfully they will be, since I was dealing with some 'unique' design issues on this cut, but I video taped quite a bit last night (4 ten minute videos plus one this morning showing the final cut pieces). Hopefully, some of the info I tried to include will help folks that haven't done this particular step in the process.
So, here we go....

:thumbsup
First off, here is a picture of the cutting tools I used. There are two different cutting wheels for my Dremel. The smaller one is just perfect for the thickness of normal fiberglassed paper pep helmets. It is a specialty blade you have to purchase separately, but since it's all metal with very fine teeth - it make VERY clean cuts. The larger cutting wheel is a common type. It's wider than the tiny blade, but it can cut deeper... which will be important for this project. The last tool is my little hand saw. If you can find a small saw like this (with a cutting width no wider than the bigger cutting wheel for my dremel), it's a MUST for this work - especially in those right angle corners!
So, starting with the tiny cutting blade, I traced my cut-lines for the faceplate.
Here's the videos of these cuts:
And here is a closer look at what those cut looks like:
After this, I started using the larger cutting wheel that can make a deeper cut. And while this still won't come close to cutting through all the stuff at the brow, it was enough to cut through some of the thicker areas at the temple of the helmet.
In this video, I show you that work and also give you an idea of how I use that hand-saw.
At this point, I concentrated on that brow area and started out by drilling very small holes in the cut-lines that I then pushed wire into. That wire punched through to the inside so I could identify how much of the interior padding I need to remove in order to 'find' my cuts. With that material removed, I was able to finally work the thickness down to a point where I could get my hand-saw into the cut. From there is was pretty straight-forward to cut along the lines I had started.
Here a video update of this part (and a tip on how to deal with any areas on the inside that might be slightly too thick for a shallow blade like my tiny wheel).
Here is a close-up picture of what this cut looked like:
At this stage the same work just had to be done on the other side of the faceplate. This went pretty quickly as I had already figured out what had to be done and how to do it.
The end result of all the work was a final separation of the faceplate from the main body of the helmet around midnight last night.
Here's what the pieces looks like RIGHT after the cut was complete...
Main Helmet:
Faceplate:
Faceplate (at the brow - showing thickness):
Faceplate open with Helmet:
Overall, I'm thrilled with the results! It is a nice clean cut that I was able to do while keeping the gap between pieces relatively narrow.
The next steps will be to clean this up with my dremel sanding attachment and then begin building the overlapping lips for the faceplate to 'sit' against. I Build these out of card-stock which I fiberglass and resin (just like you do for the pepakura helmet).
Until then, I'll leave you with a wrap-up video I did this morning walking you through what the pieces looks like right now (without any clean-up).

:thumbsup