[Chips O'Toole]

Today I used a Walter Enduro-Flex flap wheel to shape some things I was welding. I love these wheels, but it would be nice to have something in a finer grit. The ones I have are 40-grit. What's the best step up, for a better finish and more control? Should I try 80 or go all the way to 120?

[JayWal]

I use 80s for 99% of my work. Fine enough finish that you can paint over it without seeing grind marks.


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[Chips O'Toole]

Thanks. That sounds fine.

Are these things useful on 6" grinders, or is it better to stick with 4.5" for easier control?

[Poland308]

I use 40 or 60 most of the time. Unless you are working your way to a fine polish then don’t go as fine as 120. Except for thin metals then that fine of a wheel becomes necessary.

[LtBadd]

Really depends on what your grinding on, I only have a 4.5" grinder, but if you're doing thick wall structural work with a lot of beveling then a 6" grinder would be "more better"

I do have a 120 flap wheel which is nice for a fine finish, but for what I do it's mostly not needed

[cj737]

An 80 grit followed by a ScotchBrite disc will leave a very nice finish. Use the 40 to chew, the 80 to dress, the scotchbrite to finish.

[Chips O'Toole]

I found a good deal for 80-grit wheels on Ebay, so now I have 10 of them.

[snoeproe]

I use a 40 or 60 grit mostly. Anything finer than that, it doesn't remove much material and does more polishing than material removing.

[SCsoldier04]

Go check out benchmark abrasives. Not the highest quality pads but if you are just using at home and what not they are awesome.


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[BillE.Dee]

Have any you all found a decent flap wheel to cut aluminum? I know that putting the right weld down will avoid all the grinding and cussing....BUT, I've been working on restoring some parts and looking to grind without clogging the wheel.

[LtBadd]

There are flap wheels designed for aluminum, most of the major manufacturers have them