Clear Glossy Edges
Standard grinder bits are fairly coarse and leave a rough edge. Properly cleaned of swarf and taken to a full fuse, most coarse edges will fire polish to a high gloss, but it depends on time and temperature. Short time and lower temperature will still leave a cloudy edge. You can purchase Fine and Super Fine grinder bits.
Do your initial shaping with the regular coarse bit. Then clean it up with a Fine bit. I’ve used the Super Fine bit as a final grind when I am going to slump. The Super Fine edge fire polishes to a high gloss at slumping temperatures and retains a fairly crisp edge. I have been quite satisfied with the results.