How to stick the part to the surfece

Help and Feedback Scripting Support
#1

  1. What do you want to achieve? Keep it simple and clear!
    make the part stick to the walls like a c4
    image

  2. What is the issue? Include screenshots / videos if possible!
    image
    it doesnt rotate

  3. What solutions have you tried so far? Did you look for solutions on the Developer Hub?
    tried this and didnt work Need help understanding Raycast's Normal

local model = Instance.new("Model",workspace)
local part = Instance.new("Part",model)
model.PrimaryPart = part
part.CanQuery = false
part.CanTouch = false
part.CanCollide = false
local connection
	connection= game:GetService("RunService").Heartbeat:Connect(function()
	model:MoveTo(game.Players.LocalPlayer:GetMouse().Hit.p)
end)

game.Players.LocalPlayer:GetMouse().Button1Down:Connect(function()

	local anchored_To = workspace:GetPartsInPart(part)[1]
	if anchored_To == nil then
		return
	end
	connection:Disconnect()
	local position = part.Position-anchored_To.Position
	local weld = Instance.new("Weld",anchored_To)
	local part = Instance.new("Part",workspace)
	part.Anchored = true
	part.Material = Enum.Material.Neon
	local cast = workspace:Raycast(part.Position,anchored_To.Position-part.Position)
	print(cast.Normal)
	weld.C0 = CFrame.new(cast.Position)*CFrame.Angles(cast.Normal.X,cast.Normal.Y,cast.Normal.Z)
	weld.Part0 = anchored_To
	weld.Part1 = part
end)
#2

Try

local model = Instance.new("Model", workspace)
local part = Instance.new("Part", model)
model.PrimaryPart = part
part.CanQuery = false
part.CanTouch = false
part.CanCollide = false
part.Size = Vector3.new(1, 1, 1)

local connection
connection = game:GetService("RunService").Heartbeat:Connect(function()
	model:MoveTo(game.Players.LocalPlayer:GetMouse().Hit.p)
end)

game.Players.LocalPlayer:GetMouse().Button1Down:Connect(function()
	local player = game.Players.LocalPlayer
	local mouse = player:GetMouse()
	local character = player.Character
	local humanoidRootPart = character and character:FindFirstChild("HumanoidRootPart")

	if not humanoidRootPart then return end

	local rayOrigin = humanoidRootPart.Position
	local rayDirection = (mouse.Hit.p - rayOrigin).unit * 500
	local raycastResult = workspace:Raycast(rayOrigin, rayDirection)

	if not raycastResult then return end

	local hitPosition = raycastResult.Position
	local hitNormal = raycastResult.Normal

	local newPart = Instance.new("Part", workspace)
	newPart.Anchored = true
	newPart.Material = Enum.Material.Neon
	newPart.Size = Vector3.new(1, 1, 1)

	local surfaceCF = CFrame.new(hitPosition, hitPosition + hitNormal)
	local rotationCF = CFrame.Angles(0, 0, math.rad(45))
	newPart.CFrame = surfaceCF * rotationCF

	local weld = Instance.new("Weld", workspace)
	weld.Part0 = raycastResult.Instance
	weld.Part1 = newPart
	weld.C0 = raycastResult.Instance.CFrame:inverse() * newPart.CFrame
end)```