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Unread 04-25-2008, 01:21 PM   #1
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Good porcelain blade for 4.5 inch angle grinder

Hey guys,

Anyone got any recommendations on a good turbo blade for a 4.5 inch angle grinder?

I've tried the various general purpose diamond blades from home depot/lowes and they don't work very well on this tile (lots of chipping, etc). At least, compared to how well my MK hot dog cuts porcelain .

Is there an equivalent for angle grinders?

(feel free to move this thread, i posted here instead of the general forum because I figured the pro's would know)
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Unread 04-25-2008, 04:01 PM   #2
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All dry blades cause chipping. They are usually used for rough cuts that will be hidden. If the cut will be exposed it can be finished off with a sanding disk or even sandpaper by hand.
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Unread 04-25-2008, 05:01 PM   #3
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Most blades chip, but if you can cool the blade it will usually help(which kind of defeats the purpose of grinding vs cutting on the saw).

A DAMP sponge held on the grinder blade helps, but it's not the safest method of cutting since you're holding an electric tool and using water at the same time.

Why not just wet cut everything on the saw???

I've also noticed that the continous rim blades don't chip as bad as the turbo blade......
Michael Hazuka- Journeyman Tile and Stone Setter

Last edited by michaelhazuka; 04-25-2008 at 05:11 PM.
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Unread 04-25-2008, 07:44 PM   #4
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I don't use the wetsaw because i have a 7 inch wetsaw and need to make ~5 inch holes.

I guess I could cut through the bottom very slowly to get a 5 inch hole, like the article in the Liberry says, I just wanted to know if i could do it easier with an angle grinder from the top (since it seems easier to support the tile this way than try to hold it on top of the blade of a wetsaw.
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Unread 04-25-2008, 08:30 PM   #5
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use a cheap 20$-30$ multi purpose diamond blade that you can get a home depot.

use a wet sponge, wear think rubber gloves, and be plugged directly into a GFI.

I've been doing it for almost 10 years and haven't ever been shocked (very bad anyway).

Its not like you're going to die.. and being plugged into a GFI, it will trip if there is a big enough issue.
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Unread 04-25-2008, 10:25 PM   #6
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I don't know if I can explain this method well, but here goes-
If you take the grinder and just rough out the hole with the blade cutting in as normal, perpendicular to the material. Remove the excess material. Then take the blade, grinder, and go at the material straight on, sort of like a helicopter crashing into the ground, upside down. If you are very careful and the blade is in good shape and hasn't started to vibrate you can get a pretty decent circle. The exact size of the blade is easiest. A little larger just requires you to move the blade around a bit.
For some stupid reason I can't justify I started having this unspoken competition with another tile setter about how nice the hole around the toilet flange was cut. I know, doesn't matter at all, there's a toilet going on it, no place to waste time. I guess it was like trying to draw a perfect circle the way Michaelangelo could. We would walk past where the other guy was working and make some dumb comment about how it was sure going to cost a lot for all that extra grout to fill that 1/4 inch gap he left around his toilet cut. We did occasionally get some work done, honest. So anyway one day I was using my nippers and thought what the heck, grabbed the 7 inch grinder for stone out of the truck and bingo! Had to slide that beauty on with grease!
The fact is though, there are very few holes we cut that aren't covered with an escutcheon or some such. Just make a few cuts into the line of the circle, grab the nippers out of your back pocket and it's done.
Or at least that's what I do when I'm not being stupid.
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Unread 04-25-2008, 11:56 PM   #7
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I have the same problem as Michael about making a nice toilet cut for some reason. Doesn't take that long, if you have a extra toilet flange and a grinder.

But if you follow Michael steps on cutting, but then use a variable speed grinder to make the cut to your line you can almost use it as a sander if your speed is slow enough.
High Country Tile


Somewhere in the middle of nowhere Wyo, next to a Volcano .
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Unread 04-26-2008, 08:03 PM   #8
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I use American Eagle J slots.

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Unread 04-26-2008, 08:09 PM   #9
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varibale speed grinder helps with chipping
if you dont already have one

"Dont know tile.......thats why im not a moderator"
but im learning!
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Unread 04-27-2008, 01:27 PM   #10
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i use a Pearl continuos rim blade. hey, what about Diamond Blade Warehouse? They'll call you...and call you.. and call you... to see if you need another blade.
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Unread 04-28-2008, 10:26 AM   #11
Pass the Mud
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Diamond Products
Continuous Rim
Heavy Duty Orange

Best blade(s) I've ever used - 4" dry and 10" wet.
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Unread 04-29-2008, 12:57 PM   #12
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^^^ what Jonathen said ^^^^^
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Unread 09-14-2010, 06:55 PM   #13
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MK makes a hot dog blade for the angle grinders that cuts porcelain very well with minimal chipping. I will thread the part # as soon as I find where I put the paper work.
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Unread 09-14-2010, 08:12 PM   #14
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angle grinder blade for porcelain tile

go to mkdimonddirect item you want is # 159614 , hope this helps!
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Unread 09-14-2010, 08:21 PM   #15
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I can't kill this one

I've had it forever and it cuts very, very, well . . .

Every now and again I'll gently square it off on my bench grinder

great blade

Stephen -- Man vs. Tile -- The Battle Continues . . .
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