Coaster alignment Would be a good place to start if you absolutely have to get your 4x4 what-have you out within a deadline and can’t wait if it is a hardware issue requiring replacement.
But basically cutting the outline of your 4x4 square in a sacrificial piece of material. Without moving the sacrificial piece or deleting your cut square from the UI, Removing the cut out piece, placing your actual piece in the hole, aligning your engrave with the outline you cut previously so it will fall within the hole you cut. Does that make sense?