Help with making transparent parts not render weirdly

[samuelissad (Sam)]

I need help on making transparent parts not appear weirdly.

METHOD 1: Set the wedges transparency to 0.75 (what I want it to be at.)
Result:

A weird rendering bug

METHOD 2: Set an image / decal on the sides of the wedge.
Result:

Some wedges being different shapes etc. Resulting in it looking like method 1 with some of the parts.

Is there anything else I could do to just make it look okay.
This guy managed to do it:

Tower Defense X Juggernaut Update.. | ROBLOX

Should i make a 3d model or something

I CANNOT UNION THEM

[Hazelfluff]

use glass!

[samuelissad (Sam)]

fixed it! used blender to remove certain faces