how to remove broken grommet from recumbent seat (without damaging mesh)? summary: Note this question


is not about installing a new grommet: I know how to do that
is about removing a grommet, so that I can install a new grommet in the already-existing hole


details:

I have a 25-year-old SWB mesh-seat recumbent that still works quite well, but


is showing its age, in that various non-standard parts are needing replacement
its manufacturer no longer supplies replacement parts


One thing I'd like to replace is its seat, but for now I'll settle for replacing its broken grommets, mostly to prevent further damage to the seat. The broken grommets are currently all on the left side (facing) of the upper part of the seat:



(Note also that the rear/underside of the grommets are also broken similarly.) Here's a detail of 2:



The grommet holes are presumably still in good condition, though that will presumably not last: see lower grommet in above detail. I have grommets and install tools, so can presumably install new grommets in the grommet holes ... if I can get the old grommet pieces out. (FWIW, I have some replacement grommets that appear to be the same sizes as the original, but one will not fit over the existing/broken grommet.) How to remove the old/broken grommets without damaging the grommet holes?

Note also that I do not want to cut new holes (which I also know how to do) if there is any way to remove the old grommets.

Some things I have tried and rejected:


Prying the old-grommet pieces up with a small/thin screwdriver. I can't get any purchase--those old grommets are very firmly seated into the mesh.
Pulling the old-grommet pieces off with needlenose pliers. That kinda works, in that I can pull off very small pieces (i.e., the width of the needlenose) of the old grommet. Unfortunately, in addition to being tedious, this also leaves a jagged and convex edge where the piece has been removed.
After looking at half dozen videos the easiest means seems to be a Dremel or highspeed die grinder. Using a small diameter stone or steel burr make repeated passes around the inside of the grommet hole. Take care to not let the grommet to get hot enough to melt or burn the fabric. It is not necessary to grind all the way through, just remove enough material weaken the crimp.