Horn is dirt simple to work, comes in a variety of colors and can easily be done with hand tools. Cut with a fret saw, shape with a scraper, sand with 600 and 1k, buff with paper towel and good metal polish.
If you have a buffer, buff with Green stainless compound from a 600 or 1k finish. Slower buffers are a bit over-rated. I have both, you just have to learn your buffers limitations with compounds and pressure.
Rake your greased wheels often and clean the teeth on the rake with WD40 and toothbrush to remove old compound and swarf.
Trim your wheels with a sharp scissors, I buy dollar store scissors, store next to the buffer and replace them when they get dull. The threads slapping the scales, mar the finish. Also wipe the scales with a paper towel and WD40 then buff your final finish, it will produce a finer high gloss finish, works on steel too.