3/4/24: A Brief Respite

Connor O -

This past week, I completely restarted the project, using slightly thinner steel (18 gauge/1.2mm instead of 12gauge/2.6mm) as well as a more modern approach. Instead of brute forcing the material into the hemispherical shape of a helmet, I decided to cut individual triangles out of the sheet metal and weld them together. While this process was more challenging, it saved me countless hours of physically demanding labor which at this point I realize were completely unnecessary.

The image above shows what armorers like Michael refer to as a template. This paper mock-up ensures that the helmet will fit correctly and also provides insight into how, or if, the steel will be able to be assembled together.

And now, the bowl of the helmet is complete. In the image on the top right, I have welded the halves together and used a series of triangular shims to fill in the gaps caused by the pieces not fitting perfectly together. As I am using MIG Flux-core welding, it was extremely easy to melt holes in the material because it was so thin. Because of that, I ended up having to grind down and redo a lot of areas, which would be unacceptable if I were a professional welder, but as a hobbyist I can get away with messy welds. The good news is, the helmet fits on my head perfectly.

Here is the current state of the bowl — I have begun rounding out its sides and getting rid of the hexagonal shape. The white soapstone (chalk) line shows how far down I’ve gone in rounding the bowl. In this next week, I’ll have completely rounded it out and welded on the rear section which is just an inch or two longer, as well as the neck piece which protrudes out a few inches. As for dimensions, I met with Mr. McMath and one of his colleagues from the University of Arizona, who showed me a book that contains the specific dimensions of original Roman artifacts. In the future, I will be referring to this book for specifics.

Lastly, according to Michael’s experience, this process would have taken the longest out of any of the others, which include planishing, polishing, adding the brass trim all around the edges, and adding all the decorative hardware to the surface. Considering that, the hardest part of the project is finished, and I believe I am back on schedule to be finishing this helmet on time.

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Comments:

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    Mr. McMath
    Connor, I am curious what happens to your scrap metal, as seen on the ground in the second and third photo; what do you do with, say, the discarded steel from the first round? Would reshaping it too many times weaken it? Would scraps be useful for things like the eyebrows of the Gallic helmet?
    March 5, 2024 at 12:18 pm - Reply
    alex_h
    Why did you have to reset?
    March 5, 2024 at 1:17 pm - Reply
    connor_o
    Mr McMath, I try to keep my workshop producing as little waste as possible. So, I try to use some of the scrap cut-offs as pieces to practice electrical welding, or in this coming weeks' case, to investigate different techniques on smaller scales. One technique I actually just got done investigating on a cut-off is repousse, which I'll be using to make the eyebrows. It's nice having little pieces I can mess up on while I'm still learning the ropes. As for any stresses leftover in the material, after reheating steel it will lose almost all of its work hardening/stress. That is why most coppersmiths who exclusively do raising (I'll see if I can include some examples in the next post) will "anneal" their work once they notice it hardening too much -- copper likes to get very hard and brittle (more so than steel) after you've been hammering it a lot. I do annealing every so often, just until the steel is roughly 800-900 degrees Fahrenheit, as Michael recommended.
    March 5, 2024 at 5:25 pm - Reply
    connor_o
    Alex, I restarted just because I realized I could be finished with the bulk of my work much easier and faster if I used a more modern approach. With the technique I was using before, it's best done with the steel orange to yellow hot (>1500 F), while I am only able to heat it roughly up to 900-1000 at most using the equipment I have. My off-site advisor, David, shares a workshop with someone who has a torch that could heat it up more, but she wasn't able to fit me in to her schedule to teach me how to use it. As such, I was losing a lot of efficiency and wasting quite a lot of time.
    March 5, 2024 at 5:27 pm - Reply
    valeria_r
    How heavy is the helmet? Can you easily move with it on?
    March 6, 2024 at 1:16 pm - Reply
    connor_o
    Without the cheek guards/padding/other furniture, it's pretty light. I would say it is the same weight as my goalie mask. Maybe a pound or two at most.
    March 6, 2024 at 7:50 pm - Reply

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