I tried this mod: https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=1380516683&searchtext=Particle+Manifest

And can confirm that it fixes the particles, so now this is usable again.

Tons of reuploads are on the workshop

20Cats mod isn't available on the workshop anymore so im unable to try this

Is this possible to add to a weapon model?

for example an electric weapon from dead island mod

I don't know what else to tell ya man. There's no way to magically assign a swing effect to a custom model. You'd have to do it for every custom model you want to assign it to. Unless you're actually talking about my Murasama mod that has this effect compiled into it.

If not, you'll have to do it yourself. You'd have to find a bone at the tip of the model (in Blender usually), then once you have it, create an attachment variable in your .qc file:
$attachment NAME_OF_ATTACHMENT "BONE_NAME" 0 0 0 rotate 0 0 0

and only then, you can use the code in the description like so:
{ event AE_CL_CREATE_PARTICLE_EFFECT 4 "murasama_redsaber2 follow_attachment NAME_OF_ATTACHMENT" }

You can read more about these here:
https://developer.valvesoftware.com/wiki/Particles_In_Animations
https://developer.valvesoftware.com/wiki/Attachments

Also, for the 20Cat's Particle Manifest, you can find a reupload here:
https://gtm.steamproxy.vip/sharedfiles/filedetails/?id=3034954719

lazy :p

You can look at the comment I made a while ago if you want to add it to your own weapon. This doesn't work out of the box. You're gonna have to do some fiddling on your own.

the thing is, for me the laser is NOT working i have just the model and the sound

I already said not to use this if you're not planning to make your own mod with it. My murasama mod already comes with this bundled into it so you don't need to do anything else.

how exactly works particles cuz last time i had everything not working

I mean the creator of +Ultra Particle already made a crucible mod that has pretty much the same effect. You can check that out here

will it look fine with crucible mod?

Don't actually bother with this if you don't know the basics of decompiling and compiling mods. All of this is ALREADY part of the main murasama mod, so it would be redundant to try and fiddle with this one.

Can you just send a screenshot of your issue so I can clearly figure out what's wrong?

where i need paste it his particle before i can see swinging mutasama katana

yeah nvm i got it working

Like the description says, it's for modders. There's a lotta steps. In short, you would need to decompile the default view model of the weapon you want or maybe someone else's mod, edit that, and then recompile it. I'm assuming you basically no nothing about modding L4D2. So, for starters, give this a read:
Custom Melee Mod (3DS Max or Blender)

After you're familiar with that, do some googling on how "AE_CL_CREATE_PARTICLE_EFFECT" and attachment points work and you should be able to figure it out yourself. Again, not really something your average joe can do but there's no easier way to do it other than using my Murasama mod that already references the effect name.

where can i find the .qc file i downloaded everything ._.

ИДИ НА ХУУУУУЙ

You need both, Vergin.

wait so i need to install one or both ultra particle and 20cat?

why this cool not work?

Cool mod!

Nice particles, this should use this for my Favorites list

This looks quite nice.

这我用了估计会掉帧

번역: 죄송하지만 여기에 다른 두 개를 포함하면 "20Cat's Particle Manifest"가 필요한 입자 모드가 비활성화됩니다. 이 방법이 더 좋습니다.

？

用不了