I've discovered this weekend that the best way to remove a badminton grommet is this: Use some small nosed pliers to squash the grommets inside the frame, so that they can pass through the whole when pushed through. Use a grommet grinder form the inside and push the grommet through. It normally pops out quite easily and then you can use your fingers to pull the grommet out. Does anyone have any other way of doing it, or if you agree with my method, please let me know. Thanks all!