looks like you have everything under control, but just in case you are curious, i've worked on film projects that we were able to build foam body suits that looked like real chrome, its pretty simple, but expensive.....here's the jist of it.
build your piece out of L200 foam (not really something you can find at any craft store, you might have to order from a place that specializes in foam, luckily there are quite a few here in california)
L200 is great, comes in a variety of different thicknesses, comes in either black or white, i recommend black for "metal". It can be cut, shaped, sanded, even vac-formed.....the cell structure is so small that it doesn't leave a super spongy surface when you sand it, it acts more like a more solid material.
Once you've sanded your pieces as smooth as possible you can get it even smoother by just barely hitting it with a butane torch
now for the paint, i recommend using the flexible clear coat by Alsa corp....this adds a smoother glossy metal texture to the foam, but still lets the black foam show through, then just barely mist the surface with alsa corp's mirra chrome........if you wanted something more like steel or copper or gold or something you can use their candy colors on top of the chrome to alter the color, but still maintain that metal look..........if the piece won't be handled or bumped too much, then you are finished, but if you expect lots of wear and tear, go over it again with the flexible clear coat........this will bring a tiny bit of the chrome luster down, but that won't really matter unless the effect you are going for is a true high polished chrome look
and that's how you do metal foam stuff
but if you don't have hundreds to blow on a project, , just make supports for the blades out of some thin styrene, put a layer of black fun foam over it, hit it with some metalic spray paint, then bring out the edges with rub n buff
oh yeah, and if you were still interested in a rubber glove, build your model pieces and sand them glass smooth, mold them in silicone, then dust the mold with a super fine metallic powder (most good/specialty paint store carry it) and pour in a flexible black urethane, it'll pick up the metal and you can usually even buff the piece if you need to.
ok, i'll stop typing now
