Crecent Sword Slash Effect

Over time, a lot of people have been asking about specifics for this effect so here’s an explanation on it! :smiley:
Before I get started, I should note that this is how I do it, there could always be a better way but it seems that time hasn’t done its job and this topic is still lacking resources.

What you need

  • A software that allows you to view and edit the UV map of a mesh (suggested software: blender)
  • A digital art software that provides polarization (suggested software: gimp)


You want to make a squashed sphere, this mesh is what the texture will wrap around.


…the texure :flushed:
Looking back, I understood how I could’ve made this effect, but there weren’t any resources on how to actually make the texture for it. However, one day, when I consulted a friend, they were able to help me out!

Surprisingly, it’s really nothing complex or hard! (using gimp in examples)

  1. Start off with drawing a few lines; try varying line thickness, opacity/transparency, and maybe even color. I like to go around the edges with an eraser. (make sure that the lines are on a separate layer)

  2. Now go to your polarize filter, in gimp, it’s called “Polar Coordinates” (Filters > Distorts > Polar Coordinates)

  3. That’s all! Simple right!?

    If you don’t get a result you like, that’s fine. Just start over, try something different. Experiment with the lines or even the filter itself.
    Screen capture - c68bf442a44be21777ee828095675501 - Gyazo

UV Mapping

Woo! UV mapping…this isn’t my favorite thing to do but it’s the most important step, unfortunately, this isn’t something that I know about enough to explain it in English or any language for the matter.

The idea is to create a face for each side of the squashed sphere, then match the texture with that.

If you need to learn how to unwrap or work with UV maps. I’d recommend Blender Guru, he has great tutorials on UV unwrapping.


Those 3 things are all there really is to it. Now you just need to export and import the mesh into roblox, then upload the decal to roblox. From there you want to create 2 new texture objects and put them in the mesh, this is because you need to make the mesh transparent so you don’t want to apply the texture to the meshes TextureId itself.


When it comes to glow, it’s not something I’ve personally tried, but theres 2 ways I think it could be done.

  1. Multiple layers of the same decal; if I recall correctly, the overlapping layers should multiply, creating an apparent increase in brightness
  2. In the texture itself; using something like you can apply a glow to a texture.
    Screen capture - c0cc857bb5a6998060a9838cf8492a40 - Gyazo

Apologies if I missed anything, I rushed this a bit since I’m currently busy with other things but wanted to get this out before I forgot.


Why not just use beams and curve them + set it to face the camera? Amazing tutorial, but beams can provide an effect similar to this just fine. Trails could work too but they don’t look as good.

When it comes to “why” it’s more or less a personal preference. I want 3D depth and curvature cause I feel like it. That and cause, it feels less like paper. Maybe I’m imagining it, but idk, if you know/find any good examples of beams being used to mimic this, I’m open to my mind being changed. x)


i been loking on how to make this for a week now thank you so much
this really helps :smiley:

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beams lose their curvature on lower graphic levels. it is not a good substitute to begin with.

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wait its on Toolbox on Roblox Studio just search VFX u can see bunch of meshes effects

are you able to make this a free model?

Sure but keep in mind its decal


i hope you like it


When i try to double side it, the decal rotates, making it hard to align it, is it possible for you to put a png file I can rotate in photoshop?

try to paste it
top Decal onto the Left : rbxassetid://5700002681
bottom Decal onto the Left : rbxassetid://5700002681

you can change color one of those so you can stylized it to what ever you wanted

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here is something that you can add to the tutorial. since it is possible to make advanced texture animations, It’s possible to make a spritesheet, and animate it using offset, creating a much better slash effect

Beams aren’t good for sword slashes

I actually spent 10 hours on a slash effect spritesheet, and turned out EXTREMELY high quality

its better if you use mesh like if the slash to the right just clone add debris item to what direction the animation is