I am trying to make a bent type wall where I have 2 walls connecting to their own entrances connected with a 45 degree wall;
While it does look good if you come close up to it you will see that there is either a small gap between the middle wall and any of the end walls connecting or just pretty much sticking out,
I have tried to use gapfill already so if anyone has any suggestions please tell me.
Thanks for reading 
The easiest way of doing it is through generally overstretching the alls and then unscaling it down until you reach the point of intersection (this is the point where it wont cross). Mathematically, you could calculate this point but then I’m assuming you don’t want to waste your time doing the maths - you’ll probably find it easier just rescaling it by hand.You can then union them so they become one solid object if you want.
use this plugin https://www.roblox.com/catalog/144938633/Archimedes-Two-v2-4
just change the angel 45* n for the other side -45* this work for me I hope it work for you :D.
You could just use a sideways wedge and cut and union it if you need a specific shape.
Also one thing I learned with unions, different parts will keep their color, as long as they’re the same material.
So does it show where to place the brick or something
yep it will show you what it going to render before hand
then just click render and it should work
I use a plugin called GapFill & Extrude by Stravant with good results.