Post Reply Kill la Kill Scissor and Sewing-Machine Gun creation
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22 / M / CR Forums
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Posted 11/17/13
My sister is planning on Cosplaying Ryuko at A-con this year, and asked if I can make the Scissor.

Being the loving, caring, and aspiring cosplayer older brother, I'm going to attempt it.

Now, I'm looking for something tough. If the Con-goers don't questions it's safety, I'll feel I've failed. I was thinking about Fiberglass as I remember a Fiberglass weapon-toturial, and I actually own all the tools that would require.

That said, I've experience with EVA Foam as armor, why not try to make a weapon out of it and then coat it in a few layers of Fiberglass for added strength? I've no idea how I would go about this, or if I should use something other than EVA Foam like Cardboard or Wood or Cheese or Foam that's not EVA-foam.

My sister is going to cosplay Ryuko's introduction outfit, as she doesn't have the perfect 10/10 body to pull off the Sefeku look, AND she loves how badass Ryuko's outfit was, so I'm also going to need a good case to hold the Scissor blade, and this is what stumps me the most. I don't know where I'll find a case large enough to hold a Yard-or-longer Scissor blade, so should I just create one somehow out of cardboard and EVA foam? How would I go about that?




I'm also looking into how to create Tsugumu's Sewing Machine Gun, just the basic shape of the the thing. Nothing functional. I don't think gutting a Sewing machine and modifying the case would be helpful, but what do I know about Sewing machines? I'm more of an electronics type of guy. I have however thought about modifying a Airsoft Sub-machinegun I have which looks an awful lot like it, minus the base. But it's not a perfect idea so, yeah.

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44 / M / Bucks county, PA
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Posted 11/17/13
In regards to the scissors case, have you considered a plastic rifle case? Seems to me, that it would be a perfect fit. Other than that, I'd look into instrument cases.

For the sewing machinegun, you may want to find a youth model sewing machine. They are about half the size of a regular sewing machine, and typically made of plastic (read as light weight) so modifications will be easier. I wonder if you could incorporate an airsoft machinegun mechanism inside? hat would be too cool!
Dragon Mod
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Posted 11/17/13


Fiberglass (resin or resin + cloth) on top of EVA foam should be plenty strong for your needs. Or, really, you could put them on just about anything - I love the 1/2" insulation foam from hardware stores for making swords & shields, which could work for the scissor and sewing machine gun. It's easy to shape with a variety of knives, sandpaper, hot wire cutters, etc, then you can paint on some fiberglass resin layers for something that should be tough enough for con use. Adding the fiberglass cloth as well will make it stronger still, but that stuff can be hard to work with. I usually cut it into small strips and use a hot glue gun to tack it to the item, then paint on the fiberglass resin afterwards.

I like the idea of a gun or music case, if you can afford it, or you could go cardboard + fiberglass. That shape should be easy enough to use the fiberglass cloth with, giving it plenty of strength.
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Posted 11/17/13
Youth model sewing machine? I'm going to look into that right now.

And I was planning on fiberglass cloth, as I have someone(my old man) whose worked with it before, and has materials to shape it.

New question, while making the Scissor, I was planning on using a Dremel to work in the proper grip and probably make the scissor looks sharp and nice. It works wonders on the EVA Foam. But I have no idea how it's going to mesh with Fiberglass, can I do that before and put the fiberglass after? Do I just Dremel the Fiberglass?

Looking into a Guncase. I'm sure Airsoft gun's can get their own slightly cheaper and lightweight versions.
Dragon Mod
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Posted 11/18/13

Felstalker wrote:

And I was planning on fiberglass cloth, as I have someone(my old man) whose worked with it before, and has materials to shape it.

New question, while making the Scissor, I was planning on using a Dremel to work in the proper grip and probably make the scissor looks sharp and nice. It works wonders on the EVA Foam. But I have no idea how it's going to mesh with Fiberglass, can I do that before and put the fiberglass after? Do I just Dremel the Fiberglass?


Ah, perfect, he can probably give you some great guidance!

I've had trouble with fiberglass cloth (or worse, the mat) "bubbling up" from sharp creases like the edge, where it separates from the foam after the resin is applied and sets that way - then I have to sand through it & repair. I'd say try shaping the blade overall, do your fiberglass cloth over everything but the edge (still using resin on the edge), then use Bondo on the edge itself and any other cleanup areas. It's fairly easy to sand and pretty strong. It's got a really short usage time, though, so if it starts looking grainy, it's time to put it down and make a new batch.

Do you have access to a small hand sander, orbital sander, or belt sander as well? For a blade w/fiberglass, that'll probably be a LOT easier than a Dremel.

Be sure to check A-Kon's cosplay weapons policy, though. I've had blades peace bonded there before, locking the sword into its scabbard while there because it was deemed too sharp. That was back when it was at the airport, however, so things may have changed.
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Posted 11/18/13

MakotoKamui wrote:

Ah, perfect, he can probably give you some great guidance!

I've had trouble with fiberglass cloth (or worse, the mat) "bubbling up" from sharp creases like the edge, where it separates from the foam after the resin is applied and sets that way - then I have to sand through it & repair. I'd say try shaping the blade overall, do your fiberglass cloth over everything but the edge (still using resin on the edge), then use Bondo on the edge itself and any other cleanup areas. It's fairly easy to sand and pretty strong. It's got a really short usage time, though, so if it starts looking grainy, it's time to put it down and make a new batch.

Do you have access to a small hand sander, orbital sander, or belt sander as well? For a blade w/fiberglass, that'll probably be a LOT easier than a Dremel.

Be sure to check A-Kon's cosplay weapons policy, though. I've had blades peace bonded there before, locking the sword into its scabbard while there because it was deemed too sharp. That was back when it was at the airport, however, so things may have changed.


Yes I do have access to a belt sander, and I would believe a hand sander easy to obtain if I don't have that one either.

Since A-kon has moved to the Anatole it's been the most loose of any Con I've been too.

Now, the blade should look sharp but being sharp isn't the indent, being strong is! I don't want it breaking when it's used as a crowbar, and my sister is prone to breaking things she's holding. I've got plenty of ways to make sure the blade isn't sharp. If a 6 year old can't hold it with safety, I'll have failed.

Thanks for the advice! Time to get some reference pictures and decide on a size.
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