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best grinding wheel for aluminum?

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  • best grinding wheel for aluminum?

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    Hey there. I have made some welds on 3/16" aluminum. the welds need to be ground down. whats the best wheel to take off the initial weld, then whats best to blend? i need them in the a.m. so i can only go to home depot or harbour freight. can you tell me what store carrys what i need? thanks.
    Last edited by westpoint; 05-17-2013, 07:44 PM.

  • #2
    Sandpaper flap discs work great. Course ones to start fine to finish. If you can't find those you can use a regular grinding wheel but cover the wheel and weld with crisco shortening this will keep the wheel from plugging with aluminum. Sounds weird but I do it all the time on my surface grinder and the wheel is not plugged

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    • #3
      Multi flap. Does the best blending on any material.

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      • #4
        For rough grinding of aluminum I use a wheel designed for aluminum, seems to cut better than the steel ones. The steel ones seem to hop around on aluminum. Then a flap disc for the final bling finish

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        • #5
          i spray wd 40 on the wheel and work. im sure other light oils will do the same.makes a mess but rips through aluminum.keeps the wheel from clogging. sait and im sure the other top brands make a wheel for aluminum that do a great job but are expensive. i use those when i dont want an oily mess

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          • #6
            keep all you old flapper wheels the older they get the better they are .i use new ones to take off and smooth the welds and then i put on an old one to polish it.the older they are the better it polishes

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            • #7
              best grinding wheel for aluminum?

              I do mainly architectural now and when grinding aluminum flap wheels are much to easy to create a low spot. Use sanding discs with stiff rubber backers(like 3m products not the plastic backers at homedepot). All you have to do is scuff the pad with a "slick stick" or some other paste like lubricant.

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              • #8
                GOOD VIDEO http://www.walter.com/Walter/en-us/a...uminum/1-4-alu
                Last edited by tackit; 05-18-2013, 05:25 PM.

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                • #9
                  I use flap wheels for most of my aluminum.. then when I need a nice finish I use Walter blending wheels.. the ones with the Velcro pad. You can put a shiny finish on just about anything with em, their expensive and I can only find em at welding suppliers but their well worth it

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