Cutting Refractoy Concrete Embeded With Stainles Steel Neddles

Most any diamond blade,whether wet or dry will cut any masonry,natural stone,concrete or asphalt material.Different types/grades are sold for cutting a variety of materials.I have several ranging in size from 4 1/2" for mini-grinder,7" for wormdrive Skil saw,10" for wet cutting tile/stone saw & 12" for gas powered Partner K650 power cutter.I routinely am cutting limestone and occasionally granite & marble slabs/blocks for landscaping & table tops for furniture etc.

Do you have the package that blade came in? They usually state what materials can be cut with that certain blade.I know they also have ones for refractory brick also.About 5 yrs ago I had to cut out some of the 3/4" thick hard stucco,reinforced with wire mesh on my 85yr old house when doing some patchwork & installing attic vents.Mini-grinder went through the concrete/steel mesh like it was nothing.

Yeah mine to were a tight fit,I just took the angle grinder and ground some off the top, dusty but it worked.It was only 1 or 2 blocks that were tight for me.I also used 2 std. firebrick in front and back laying on the long edge (I think they show that on the picture on the cozyheat website)

I should clarify,I ground off some on the blocks not the boiler itself! (dont want anyone grinding away on their boiler!)
BTW the blocks ground very easy(not as hard as concrete)

an eBay "refractory" search in business and industry will show a lot of products for refactory including circular diamond blades. I use ebay to do a lot of product "research". Before you cut though I would make sure the company sent you the right parts. You could have gotten 60 or 25 blocks. 2 cents...

When I did my three pallets of fire brick, it was about 3 million cuts more or less, well at least several hundred and 5 blades on my wet saw for ceramic tile. The stuff cuts easy, don't know about the needles, can tell you that a diamond core bite will cut threw rebar fairly easy, might try a flat diamond for a right angle grinder, think they can be bought at the box stores. these work great on concrete- we use then for flatting concrete around drains etc.

any diamond blade that will cut the brick will cut the SS needles. If you have a lot of cutting it might take a few blades but it will cut them.

I have cut refractory with ss needleds in them with a tile saw/diamond blade. No problem!!