CFrame.Angles is way to drastic?

So im trying to make a box open by it being slow at first but speeding up each time it reaches the limit and then exploding. However the Orientation movements are WAY to drastic.

Here is my code!

local times = 1
local factor = 1
local rotation = 0

while wait(0.3) do
    if times == 6 then
        break
    end
    for i,x in pairs(script.Parent:GetChildren()) do
        if x:IsA("BasePart") then
            print(x.Orientation.X-factor)
            x.CFrame = x.CFrame * CFrame.Angles(x.Orientation.X-factor,0,0)
        end
    end
    rotation = rotation - factor
end

script.Parent.Union.Changed:connect(function()
    if rotation == -40 then
        times = times + 1
        factor = -times
    elseif rotation == 40 then
        times = times + 1
        factor = times
    end
end)

I have no idea what I am doing wrong.