Mesh overlapping bug

Hello everyone!

I have this weird overlapping bug, but i don’t know why that is, maybe you guys can figure something out?

http://puu.sh/qs3d1/303a2ffa6a.jpg

http://puu.sh/qs3ww/b03ba63a08.jpg

Thanks!

: // Blade.

You need to be using Opacity Mask not Opacity. You’ll have to change your material type so you can switch that