I worked for a shop that did chrome and polished aluminum. Have ya'll ever tried greaseless compounds? They are sold by multiple companies. You can cut down time it takes to prep the part for compounds and increase luster. Try getting some in 320, 400, and 600, then move to emery cake compound, then Tripoli, then white rouge. This will leave a perfect shine on most cast aluminum parts. I'll get some pictures from my old PC once I finish my move. Remember to always move excess compound and thoroughly clean the parts in between each step. When using a bench grinder allow the compound to do the work, don't apply much pressure on the parts as this gives a non-uniform finish, and always switch out buffing pads when switching compounds. I'll give a detailed post when I finish polishing the T-76 turbo for my friend’s turbo build, and the parts on my blaster engine. Overall you did a great job, just trying to give you an idea to cut down the amount of time you’re spending on prep work. Eastwoodcompany sales some of those greaseless compounds, but it's been 8yrs since I've worked for the company, so I'll try to give some links to anyone interested. Eastwoodco.com
