Bit of a lull since the last post but I'm back. Did some work on modifying the dent a bit over the past few days.
First thing first I printed out the comparison pic from earlier and traced out what I needed to improve, then traced it on to the actual helmet dent itself. From there what I wanted to do was to just make the whole thing more shallow, so I kneaded up some apoxie sculpt and pressed it in there to raise the whole thing up. I let that harden for a bit (read: few hours), then kneaded up a few more smaller balls and stuck them in some sections that I needed to improve the shaping on.
One night later it was all hardened up and I began shaping it back, at first with a coarse round file and then with rolled up sandpapers:
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Just to see where it was at after that I gave it a primer coat to uniform the colors. The depth seemed better, but there was still some smoothing work to do yet and it looked like i had gotten a little too liberal with the sanding and taken out some of the curves I had put in. I'd need to get the apoxie sculpt out again and redo them:
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As you can tell by the last image there, the colors were getting pretty chaotic, so I gave the whole thing another coating; this time in a reddish color to see if it'd reveal any imperfections that the greys don't.
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I suspect I might be one or two mm too deep still, I'll have to try to get a precise measurement. If it is though, it'll be pretty easy to smooth in some more apoxie sculpt to shallow it even more, it was getting the ridges shaped that took all the time. They're still inaccurate in a few places, namely the two big straight sections which are too short on mine, but that's something that would need a complete rework to fix and I'm more just chasing the existence of every ridge and curve rather than their exact mm sizes. I'm pretty happy I've gotten it as close as I have just free-handing.