ACCURA 03801 20 INCH DISC SANDER PRODUCTION GRADE!!
Eastwood Disc Sander | Powerful 1.25HP 12" Disc Sander Tool | Heavy Duty Cast Iron Base and Vacuum Port with a 45 Degree Adjustable Work Surface and Adjustable Miter Gauge - Amazon.com
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Making a 20 inch Disc Sander - YouTube
MachineryMax.Com - Max "20 Inch" Disc Sander & Grinder