Troy, the plug was finished with 8oz glass/epoxy. After the glass, minor imperfections were filled with a finishing automotive polyester resin that had the viscosity of warm honey. I used a product called EverCoat Easysand. Might not be available down under, but I'm sure there is an identical product under another name. I wet sanded with 180 grit or maybe 220, can't remember. Cleand the plug really well and then shot 6+ coats of a good automotive urethane primer. I used PPG Deltron 3057 if I remember correctly. I then wet sanded the primer up to 1500 grit, and used two fine cut automotive polishing compounds, the last one being super fine. You'll start to get a shine with the 1500, but haze when looking head on. After the polishing compounds, I had a mirror finish no matter how you look at it. Pics I posted, are after the first polishing compound and before the super fine polishing compound. While this seemed to work for me, I'd still like to throw out the disclaimer that I am fairly new to this, and by no means an expert.