Grinding high spots on oven floor

[irelande5]

Hi all,

Anyone have a recommendation on what to use for grinding down high spots on oven floor? I have a 4" angle grinder, but the diamond blade grinder I have is too aggresive. Just have a couple bricks that are 1/16" higher than others and worry about peel chipping corners off later, want to take care of this before dome gets closed up. Thanks, pat

[Neil2]

You can buy 50 grit diamond pads in four inch. Keep the surface of the brick wet when using diamond pads.

You can also get grinding stones for a four inch grinder and this may be your best bet. These stones last forever and have many uses.

[nissanneill]

Hi Pat,
you can get sanding discs for your grinder whether course or medium to take your slightly high spots off. The firebricks are not really that hard but you may use a couple of discs to achieve your goal. In my build, I used a special disc in my 9" grinder to finish the floor and to sand my slab of granite that I use to roll and prepare my bases. It is photographed and rather worn out but it did the job and did it well.

See: http://www.fornobravo.com/forum/f21/...-4-a-2045.html (Neill’s Pompeii #4)

for the disc in permalink #8 and the slab in #12.

Cheers.

Neill

[Les]

Pat,

Do you have access to a belt sander? Thats what I used - a little easier to control. It took a few belts but it was smooth as a baby's butt.

[irelande5]

Thanks gentlemen, sounds like a good ideas all the way around. Les I do have a belt sander, do they make a paper rated for brick sanding, what grit level did you use.

[Les]

Originally Posted by irelande5

Les I do have a belt sander, do they make a paper rated for brick sanding, what grit level did you use.

I believe I used 50 grit - just the standard stuff. You will blow through a few belts but it gets the job done.

[irelande5]

great thanks Les

[irelande5]

Hey Les, was thinking about using a quarter circle for form like you did on your build, what's the best way to set that up? Is that just a 21" half circle (building a 42"_)

[Les]

Yes. I attached a nail to go into a centerline hole in the hearth. Since brickwork is not perfect, I had to notch the vain every course so it wouldn't hang up as it turned. I used this approach before the "tool" evolved. It may be an easier approach.

[irelande5]

Great, thanks Les