Thanks everyone, you're doing my job for me
@mummel - yes, if you're labelling TH&C chips, you can just apply a label directly over the existing inlay. I recommend unlaminated labels for that purpose, since there is less room (depth) in the inlay area i.e. usually not enough depth for laminated labels.
In terms of the diameter of the label, I can cut them to whatever size is needed. For most chips, including both TH&C and RHC, I make them very slightly smaller than the inlay area, so that they will fit nicely without jamming up against the edges, but still covering the existing inlay. For normal inlays (i.e. not oversized) there is a band of "blank" chip between the inlay and the edge of the recess, so as long as the label ends somewhere in that gap, it's fine. (I still try to get them as close to the edge of the recess as practical.)
For removing & replacing, the new labels go into the space left by the old inlay.
@mummel - yes, if you're labelling TH&C chips, you can just apply a label directly over the existing inlay. I recommend unlaminated labels for that purpose, since there is less room (depth) in the inlay area i.e. usually not enough depth for laminated labels.
In terms of the diameter of the label, I can cut them to whatever size is needed. For most chips, including both TH&C and RHC, I make them very slightly smaller than the inlay area, so that they will fit nicely without jamming up against the edges, but still covering the existing inlay. For normal inlays (i.e. not oversized) there is a band of "blank" chip between the inlay and the edge of the recess, so as long as the label ends somewhere in that gap, it's fine. (I still try to get them as close to the edge of the recess as practical.)
For removing & replacing, the new labels go into the space left by the old inlay.