Gets very hard. Fills holes & gaps. I filled around the gas pipe that feeds the gas powered log lighter. The gap was up to 1/2" vertical. It is a bit soupy, but that seems to be what allows it to make good contact and adhere well to fire brick. I also used a large amount of it to mount the 90 degree elbow/niple/cap on the end of the lighter, because it was about 1/8 inch from making contact with the floor of the fireplace. I used about 1/2 of the jar on this, it looks very substantial. I purchased and used this two times... This hardens very well, so don't mess up - it would be tough to remove!
Arrived quickly and was helpful in patching my kiln. Consistency is like thick cream which makes it easy to apply to cracks.
Just what I needed to fix part of my kiln. Thanks.
Used it to Repair brick
Great
Feature Product
- Cracks and chips in kiln refractory can be permanently sealed with AMACO Kiln Cement.
- This prepared cement is ready for immediate use.
- When mixed with coarse grog or pieces of refractory, cement may be used to repair large holes in firebrick.
- WARNING: Do not allow direct contact with elements and electrical wiring.
- Made in USA
Description
Cracks and chips in kiln refractory can be permanently sealed with AMACO Kiln Cement. The prepared cement is ready for immediate use. When mixed with coarse grog or pieces of refractory, cement may be used to repair large holes in firebrick. WARNING: Do not allow direct contact with elements and electrical wiring. 1 lb. Jar. Made in USA
After scouring Amazon and looking and weighing the many and various options for Kiln repair cements, I finally settled on this product, and I am glad I did! The reason I settled on this one was the price, and that it is actually a kiln repair product, and not just a stove or a fireplace repair product. People are sometimes tempted to go with some less expensive or more convenient products, like like a "stove and fireplace repair" cement, because they may be cheaper, and / or they sometimes they come in a convenient caulking tube. But people need to beware that oven , fireplace and wood stove repair products are usually only rated for between 1500 and 2002 degrees (f). So if you have a true ceramics firing kiln which reaches up to "cone 10" or "cone 11", your stove will be firing at up to 2375 degrees (f) to 2400 degrees (f), And stove / fireplace type products may fail at those extreme temperatures.
I followed the instructions for the cement fairly closely, and my results were very satisfactory. Be sure and put something over any nearby heating or electrical coils to shield them form any direct contact with the solution, as the instructions advise. I used cut strips aluminum foil to shield my coils with. But I read later on that the best thing is to use for that is a heavy plasterboard type paper. That way if the paper should get hung up in a tight place, you won't damage your repair by tryng to yank it out. The paper will just harmlessly just burn out when you fire your kiln.
You will also need plenty of water, and maybe an old paintbrush to apply the water to the brick with, because you will need to pre-wet the brick before applying the cement. And if you have much damage at all, the water soaks into the brick really fast. I had a bowl of water handy which I dipped the smaller broken pieces of brick directly into to moisten them. I used a separate 1 inch paintbrush to apply the cement onto the brick with. I also applied a nice thick layer of cement to both sides of the repair. After I completed the main repair, I pulverized some of the small fragments of leftover brick, as the instructions suggested, and mixed it with some of the cement and made a paste for the larger cracks.
Once the repair was cured, which is a suggested time of 24 hours, I fired my kiln to around 200 degrees twice, for about 10 minutes for each firing, Then I fired the kiln to around 400 degrees for about 15 minutes, and let it cool for awhile. After that I fired to the 1050 degree firing my project required. Once the kiln cooled, I inspected the repair. I was very impressed with the strength and the appearance of my repair.
If any one is wondering what product to use for a kiln repair, this one certainly has my vote, and my recommendation!
This stuff works great. I used it to repair some holes in the bottom brick of a kiln I bought used. I mixed some crushed up firebrick and it worked like a charm. The bottom of my kiln is now intact. I also repaired a brick that had broked almost in half. I just sprayed it down with some water, put a bunch of this stuff in between the parts of the brick and pushed it together. After a few days, it was rock solid--even harder than the initial brick. This stuff goes pretty far too, even though the jar isn't all that big.
I used this to fill a small crack in the lid of an old Imperial Kamado ceramic cooker that I have. So far after using it a few times the cement seems to have filled the crack and held strong. I applied a small amount to the outside and the inside the full length of the crack.
Make sure you clean the surface area EXTREMELY well. If you don't clean the surface it will just flake off after drying, especially on the inside where the cooker is covered in a think layer of smoke and grease.
It doesn't take much of this to fix the crack so if you will have a lot left over for other projects.
Perfect consistency / this little jar goes a long way. We are repairing my kiln base as some of the bricks need a touch up. Work just as needed.
I was able to use this product to repair my microwave kiln. Use light coats and let dry and it works great.
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