Entirely depends on the tile.
I’ve used the carbide sanding plates to remove adhesive/thinset as well as the carbide cutting blades to remove grout, works like a charm. But: None of these would even scratch the back (not glazed) or sides of the tile once the adhesive/thinset or grout was gone.
Potential glazing will be an issue on its own.
Most of them would also be too coarse, and have you ‘jumping’ over the tile and then probably disintegrating because the force applied is too much for those single carbide bits. It’s going to be tedious and highly likely you will go through quite some of the plates.
If I was to try this, I’d go with one of the highest grits available. Remember that most of these are designed for a max. speed between setting 2 and 3.
Diamond sanding plates exist in natural stone / terrazzo repair/maintenance. Mostly designed for use with delta sanders, not necessarily with multitools and their sanding plates. If it’s really worth a try again depends on the tile and price vs. quality of the plates. …
What I would probably do, if you can fit the multitool in there, you can probably fit one of those small cordless straight grinders (and/or rotary tools) in there as well that are available today. And then get a diamond grinding pin for it. Obviously check that it fits the requirements (top speed, shank diameter, lateral force being applied to it, (…))
If you have a diamond tooling specialist in your area, inquire with them. Sometimes flooring/tile dealers sell diamond tools as well and might be able to offer some helpful advise.
Hope this helps.
Kind regards,
Olli