Part Slicing Sizing

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,
#1

The first attempt is me using a normal size, the second attempt is me using another size that wasn’t used before.

I don’t know how I would calculate this, whenever I change the size, it doesn’t act as the area that will be taken out of the part

local GeometryService = game:GetService("GeometryService")

local function createSlice()
	local part = Instance.new("Part")
	part.Transparency = 1
	part.CanCollide = false
	part.Anchored = true
	part.Parent = workspace
	return part
end

local function slice(newSlice,mainPart)
	for _,comp in ipairs(newSlice) do
		if comp then
			comp.Anchored = false
			comp.Parent = workspace
			comp:SetNetworkOwnershipAuto()
		end
	end
end

--[[POSSIBLY USE RADIUS
--Vector3.new(radius,mainPart.Size.Y/2,radius) (original size value)

--]]


return function(mainPart,slicePart)
	local sliceSize = Vector3.new(slicePart.Size.X,mainPart.Size.Y,slicePart.Size.Z)
	local topSlice = createSlice() --//bring up
	topSlice.Size = sliceSize
	topSlice.CFrame = slicePart.CFrame * CFrame.new(0,topSlice.Size.Y/2,0)
	local bottomSlice = createSlice() --//bring down
	bottomSlice.Size = sliceSize
	bottomSlice.CFrame = slicePart.CFrame * CFrame.new(0,-bottomSlice.Size.Y/2,0)
	--//
	local newTop = GeometryService:SubtractAsync(mainPart,{topSlice})
	topSlice:Destroy()
	local newBottom = GeometryService:SubtractAsync(mainPart,{bottomSlice})
	bottomSlice:Destroy()
	
	slice(newTop,mainPart)
	slice(newBottom,mainPart)
	mainPart:Destroy()
end