You could get a company to produce ultra-high-quality inlays that you cannot distinguish from the original (cost?). you can use various resins to literally bond it to the chip (cost?). you could even. texture the inlay to match the original (cost?) you could use a micro CNC to carve a relief if you wanted to (cost?)
It is not possible to remove an inlay from a compression-molded chip such as a casino Paulson and then replace it with a replica in such a way that it could not be distinguished from the original. This is deliberate; it's part of the design of the chip and of the chip-making process, and it's a security feature, making it difficult to produce counterfeits or to indetectably alter an original.
The original compression molding makes the transition between the inlay and the surrounding chip material seamless. If you remove the inlay you're left with a recess; you will never be able to cut and place a new inlay such that it perfectly fits that recess and leaves no detectable seam between the inlay and the edge of the recess.
The texture that's impressed into the surface of the inlay comes from the texture of the mold; that same texture is imparted to both the inlay and the surrounding material that the inlay is pressed into. That texture has a
grain; it has a
directionality to it. The replacement inlay would have to have the exact same texture as the original, and it would have to be aligned precisely in both direction and position as it was on the original, because it has to match precisely in direction and position with the original texture that's
still present on the surrounding chip material.
While this sort of precision work might be
theoretically possible, anyone with the resources to do something like this would be able to more cheaply simply create their own Paulson replicas from scratch. It would be wildly simpler than indetectably reconstructing a removed inlay.
Once murdered, a chip can never be whole again. Whether the alteration was worth it is of course in the eye of the beholder; most people don't notice, and of those who do, most don't care. But a few of us do.
