Grinder disc comparison and cleaning off mill scale

In this episode we look at numerous discs that are commonly used to grind metal, and how they work for cleaning mill-scale off. 0:00:00 Intro 0:07:08 Let’s start testing 0:10:12 Hard rock wheel 0:12:43 Duo disc 0:15:50 Specialty disc 0:18:18 Testing on cleaner metal 0:25:36 Conclusion 0:30:10 Extra credit