No.. Your remembering two separate processes. Resin polishes up to a mirror finish and will last for ever.If my memory is somehow still functional, didn't you(or someone did) polish up some resin to a nice gloss, but then covered it in a lacquer or something? Does it work to just polish it up without some sort of clear coat?
Somewhere in my crossed brain wires I recall something about Krazy Glue used for that. Not something I'd want to venture into as I have zero intention of having a squonk stuck to my hand until the grave, but something a far less capable person could use with a little bit more personal safety?
The superglue clear coat is usually used for stabwood as it both seals and protects the surface.... But it does also result in a mirror finish if you apply enough coats.... Good luck