Who Invented Supercharger
http://louisdmss928.angelfire.com/index.blog/1621912/how-to-explain-whipple-superchargers-melbourne/
Now you're completed sanding up to 400 grit; by now you've most likely figured out how to get into the small areas of the blower, if not get creative, worse case is you're simply balling up sand paper on the end