I wanted to make a line connecting two parts for an upcoming project and was disappointed to find every post used CFrame-based methods that I simply could not get to work. Thus, I did some basic algebra and trig (I’m too lazy explain the math that goes on behind it) and got this code! Tested with quite a few conditions, this should work for any iteration. Here’s the code:

```
local function make_line(a : Vector3, b : Vector3)
local x = math.abs((a.X-b.X)/2)+math.min(a.X, b.X)
local y = math.abs((a.Y-b.Y)/2)+math.min(a.Y, b.Y)
local z = math.abs((a.Z-b.Z)/2)+math.min(a.Z, b.Z)
local magnitude = (a-b).Magnitude
local XZ = math.deg(math.atan2((a.X-b.X), (a.Z-b.Z)))
local Y = -math.deg(math.atan2((a.Y-b.Y), math.sqrt(math.pow(math.abs((a.X-b.X)),2)+math.pow(math.abs((a.Z-b.Z)),2))))
local line = Instance.new("Part")
line.Anchored = true
line.Size = Vector3.new(1,1,magnitude)
line.Position = Vector3.new(x, y, z)
line.Orientation = Vector3.new(Y, XZ, 0)
return line
end
local test = make_line(workspace.test1.Position, workspace.test2.Position)
test.Parent = workspace
```

Result: