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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.
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
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
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
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.
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