Milwaukee 6146-30 Grinder Review Tim reviews the Milwaukee 6146-30 Grinder in this video. The grinder is a well-balanced and powerful 4.5-inch grinder. The above is an affiliate link. I get a tiny commission if you purchase this item from Amazon. SPONSORS / 2 Responses to Milwaukee 6146-30 Grinder Review Hey Tim, not a good idea to grind steel next to a motor vehicle. I have seen the affects of this on both the paint and the glass. those grindings fly a long way and attach them self to most surface and then rust Kind regards, Roley Reply I am looking at getting a grinder. I wish you would have mentioned the different uses for a grinder. I would use it for cutting brick for a small doorstep area in my backyard not for grinding metal. Also you should use a dust mask and gloves for cutting stone along with eyes and ears. Reply Leave a Reply Cancel reply You have to agree to the comment policy.Comment Name * Email * Website Sign up to my newsletter to receive expert advice for your home!