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Best grinders for stainless

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  • #16
    Expensive but u get what u pay for.
    Maybe but we havnt burned up the orange one in 3 either.

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    • #17
      Originally posted by Sberry View Post
      Maybe but we havnt burned up the orange one in 3 either.
      You are so right!!!! I use my Ridgid grinders and at times beat the hel| out of them and they are going strong. I feed them a steady diet of steel, concrete, granite and tile with no ill effects. So it's been close to five years and we have not burned up the orange. You do get what you pay for, but I like to pay as little as possible for what I get.

      Nick

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      • #18
        My Boschs have been going strong for over four years. Got them in a buy one get one free deal for $80. I will never throw money away on something like a metabo, I just can't justify paying so much more for something that works marginally better at best.

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        • #19
          If you have serious grinding to do buy a serious grinder. I grind a lot mostly with 9" and 7" grinders. I haven't bought anything but 9" grinding wheels in years. When they wear an inch off the radius I knock them down to the next size machine. I used a lot of walter/metabo and I am now using Hitachi as they are a little cheaper. I have burnt/ wore out a number of them brushes,bearings,armatures,coils and gears. Sometimes I fix them and sometimes I find there is too much gone to bother. I don't bother with some of the smaller machines(5" is as small as I go) as they use a smaller diameter hole in the stones and I would need an adapter to mount my leftover wheels and I find 5" grinders take too long to get the job done. For me the most important issue is to use the proper abrasive for the job at hand. Most anything will turn a grind stone but if your using the wrong abrasive you end up either chewing up wheels for nothing or spending way too much time for nothing. My $.02. I work cheaper than some of these $.2 (twenty cent) guys. Haha.---Meltedmetal

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          • #20
            I work with stainless steel on a daily basis in the food industry. I have a shop and portable business. I currently have 9 w-7/w-8 Metabo grinders along with a dewalt 7". I Keep 5 at shop and 4 on truck. Last year I just totally burnt up my first grinder from a job I use to work at 13 years ago. All I do is take them apart every few months and blow out the brushes and if needed replace them.

            You are probably burning up your grinders because you want to get it done now. Stainless with the chrom and nickel in it creates a heat source and hardness which makes it harder to grind down stainless. I only use flap wheels for stainless for better cooling action and smoother finish. To sand the inside joints, you probably want a dynafile or imitation. The belts get expensive but it works like a charm.

            The better the wheel you use, the longer the grinder will last.

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            • #21
              Originally posted by Country Metals View Post

              You are probably burning up your grinders because you want to get it done now. Stainless with the chrome and nickel in it creates a heat source and hardness which makes it harder to grind down stainless.

              The better the wheel you use, the longer the grinder will last.
              Your not wrong, I do want to get it done now or better still yesterday but let me clarify. Most of my grinding is in a foundry setting. I may grind 6+ hours a day on gates and risers and I hate grinding. It is noisy dirty, dirty,dangerous and I've been doing it for too long. Much of what I grind is chrome carbide iron which is very hard and work hardens as you go. Occasionally a 6" diameter riser that I first have to cut with an abrasive cut off disc(which is really hard on the grinder) and then grind down a 1/2" of riser. My collection of burnt out/destroyed grinders is from 35+ years of doing this and they don't owe me anything and yes, the right abrasive is really, really important.---Meltedmetal

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              • #22
                Meltedmetal, If your grinding all those hours and that much metal you really need a good grinder with the least vibration possible. I would think those high end model air grinders would be the ticket for you. Oh and i sure agree with you on not liking the grinding and man if i did it as much as you i know i wouldn't like it.
                HH 210MVP
                Spoolrunner 100
                Powercraft AC buzz box
                Lotas LTP5000D plasma
                Victor Oxy/Acet
                30 ton press
                A few brand name tools
                Lots of no name tools
                A wife to worry me
                and 4 dogs to supervise me

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                • #23
                  Originally posted by Fireman View Post
                  Meltedmetal, If your grinding all those hours and that much metal you really need a good grinder with the least vibration possible. I would think those high end model air grinders would be the ticket for you. Oh and i sure agree with you on not liking the grinding and man if i did it as much as you i know i wouldn't like it.
                  Ah, air grinders, the stuff of dreams. I expect you are right an air grinder would be good and as good as most of the high end electric grinders I've used are, I would expect air to be better. Unfortunately for me we are a very small company in two buildings separated by a public road and the main air supply is on the other side of the road from where I do the finishing. That means I would need an air compressor as well just to run the grinder. At this stage it's not likely to happen.
                  I don't grind 6 hours every day but some days I do. As I've mentioned we are a very small company so I wear many hats but I think I've done my share. You know what they say "Somebody has to do it"? Around here I'm a "Somebody".Haha.---Meltedmetal

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                  • #24
                    Originally posted by Meltedmetal View Post
                    Your not wrong, I do want to get it done now or better still yesterday but let me clarify. Most of my grinding is in a foundry setting. I may grind 6+ hours a day on gates and risers and I hate grinding. It is noisy dirty, dirty,dangerous and I've been doing it for too long. Much of what I grind is chrome carbide iron which is very hard and work hardens as you go. Occasionally a 6" diameter riser that I first have to cut with an abrasive cut off disc(which is really hard on the grinder) and then grind down a 1/2" of riser. My collection of burnt out/destroyed grinders is from 35+ years of doing this and they don't owe me anything and yes, the right abrasive is really, really important.---Meltedmetal
                    If your doing a lot of 1/2" removal on chrome carbide iron, and using a small grinder, then that is just not good common sense. Air grinders suck because they have no balls to do some real grinding, they work perfectly for finishing work though. I use them in the food industry since 90% of equipment there runs off air and is always available.

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                    • #25
                      Originally posted by Country Metals View Post
                      If your doing a lot of 1/2" removal on chrome carbide iron, and using a small grinder, then that is just not good common sense. Air grinders suck because they have no balls to do some real grinding, they work perfectly for finishing work though. I use them in the food industry since 90% of equipment there runs off air and is always available.
                      Small is a relative term. Most of the grinding I do here is with 9 and 7 inch grinders, and 7 is mostly to use up the grinding wheels. I had a 5 hp swing grinder with 12" stones( for swing grinders that is small) but for the variety of things we do I found it impractical. As I'm sure you know both the machine and the abrasive should be matched to the job at hand. In iron I'm finishing castings from less than 1 ounce to around 350 pounds so I use a variety of grinders depending on the job at hand. I haven't used air grinders but I'm disappointed to hear that they are not very powerful. What do you have for air grinders and are they getting sufficient air supply or is that just the nature of the beast?---Meltedmetal

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                      • #26
                        Thanks for the participation fellas. There's some good tips in here.
                        MillerMatic 252
                        Spoolmate 200
                        Diversion 165
                        Spectrum 625 X-Treme
                        Dayton 6" Miter Band Saw
                        Delta Drill Press
                        Bosch 10" Table Saw
                        Bosch 12" Double Bevel Miter Saw
                        Jet 5 Ton Chain Hoist
                        Radnor O/A

                        and this heavy duty table I made

                        sigpic

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                        • #27
                          Are you using a wheel especially designed for grinding stainless? I've done a lot of stainless jobs and have never burned up a grinder on one.

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                          • #28
                            No, I was just using the stock Dewalt discs from Lowe's. I need some stainless specific abrasives too. Should be getting home from the rig Tuesday so I'll be back at the grind.
                            MillerMatic 252
                            Spoolmate 200
                            Diversion 165
                            Spectrum 625 X-Treme
                            Dayton 6" Miter Band Saw
                            Delta Drill Press
                            Bosch 10" Table Saw
                            Bosch 12" Double Bevel Miter Saw
                            Jet 5 Ton Chain Hoist
                            Radnor O/A

                            and this heavy duty table I made

                            sigpic

                            Comment

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