Fill a gap between two CFrames, no matter the angle?

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#1

So I’m making a tool where you can draw on every surface you want (spheres, normal parts, wedges, etc). I came across that when I draw, if my cursor is too fast, I would have dotted lines:

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image1005×587 73.6 KB

I fixed it by making a part that fills those gaps:

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image975×439 46.3 KB

Now when I wanna draw on other angles this happens:

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image855×480 93.6 KB

Another example:
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image740×591 38.4 KB
.

The lines don’t correspond to the angle that its been drawn to.
Here’s a piece of my code:

local brushRay = brushRaycastModule.raycast(ignoreList)
	
	if brushRay then
		brush.Parent = personalPaintFolder
		
		local normal = brushRay.Normal
		brush.CFrame = CFrame.new(brushRay.Position, brushRay.Position + normal)
		if mouseDown then
			local point0 = brush:Clone()
			point0.Anchored = true
			point0.BrushGUI.AlwaysOnTop = false
			point0.BrushGUI.LightInfluence = 1
			point0.Parent = clientPaintFolder
			
			if point1 then
				local pos0 = point1.Position
				local pos1 = point0.Position
				
				local distance = (pos0 - pos1).Magnitude
				local cf = CFrame.lookAt(pos0, pos1) *  CFrame.Angles(0, math.pi / 2, 0) * CFrame.new(distance / 2, 0, 0)
				
				local partC = Instance.new("Part")
				partC.Anchored = true
				partC.Size = Vector3.new(distance, 0.068, 0.25)
				partC.CFrame = cf
				partC.Color = Color3.fromRGB(255,0,0)
				partC.Parent = clientPaintFolder
			end
			
			point1 = point0
		end
	else
		point1 = nil
		brush.Parent = replicatedStorage
	end
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