trina Posted February 22, 2012 Report Share Posted February 22, 2012 Hi there, Can anyone share ideas with me about 'homemade' grog. I have some chimney bricks which I am considering bashing up and adding to some low fire terracotta clay body. Thanks in advance Trina Link to comment Share on other sites More sharing options...
TJR Posted February 22, 2012 Report Share Posted February 22, 2012 It's possible to bust up old bisque ware to make grog and I'm sure you can break up bricks as well. Couple thing to consider; 1. What temperature were the bricks fired at? If you put them in your clay will they blob out the side? Make a test fire of some on a broken kiln shelf first. 2. How can you smash the particles small enough? This is what machines are for- like a jaw crusher and a plate mill.[found in Geology departments]. 3. Then you have to sieve your grog to get the right particle size. 4. DUST!!! I have used grog from bisque. Works great, but I don't tend to use a lot of grog for functional pots unless you are rakuing, or making sculpture. TJR. Link to comment Share on other sites More sharing options...
Arnold Howard Posted February 23, 2012 Report Share Posted February 23, 2012 Can anyone share ideas with me about 'homemade' grog. I have some chimney bricks which I am considering bashing up and adding to some low fire terracotta clay body. You could make kaolin grog from powdered firebricks. Sincerely, Arnold Howard Paragon Industries, L.P., Mesquite, Texas USA ahoward@paragonweb.com / www.paragonweb.com Link to comment Share on other sites More sharing options...
trina Posted February 23, 2012 Author Report Share Posted February 23, 2012 Can anyone share ideas with me about 'homemade' grog. I have some chimney bricks which I am considering bashing up and adding to some low fire terracotta clay body. You could make kaolin grog from powdered firebricks. Sincerely, Arnold Howard Paragon Industries, L.P., Mesquite, Texas USA ahoward@paragonweb.com / www.paragonweb.com Hi there, Thanks for your reply, are we talkin powdered as in dust? I am planning to do something sculptural in terra cotto and burn it in a pit fire so I know the temps arent going to be more than whatever the fire brick was fired at. I was thinking of rice sized bits. Trina Link to comment Share on other sites More sharing options...
trina Posted February 24, 2012 Author Report Share Posted February 24, 2012 Can anyone share ideas with me about 'homemade' grog. I have some chimney bricks which I am considering bashing up and adding to some low fire terracotta clay body. You could make kaolin grog from powdered firebricks. Sincerely, Arnold Howard Paragon Industries, L.P., Mesquite, Texas USA ahoward@paragonweb.com / www.paragonweb.com Hi there, Thanks for your reply, are we talkin powdered as in dust? I am planning to do something sculptural in terra cotto and burn it in a pit fire so I know the temps arent going to be more than whatever the fire brick was fired at. I was thinking of rice sized bits. Trina So I smashed up my fire brick wacked it into my clay, decided to make two very large tiles / masks and am now hoping for the best. I did only use the finest dust and will use the rice sized bits for my original idea.... will keep you posted . Trina Link to comment Share on other sites More sharing options...
neilestrick Posted February 27, 2012 Report Share Posted February 27, 2012 My only question is: WHY? You can buy red grog, and have a much more consistent product than you can make yourself. If you do make your own, it's best run it through a screen to get the right particle size. Generally, clay bodies will use a 30-80 mesh grog. And be sure to test. Some red bricks fire a lot lower than you'd think. Link to comment Share on other sites More sharing options...
trina Posted February 28, 2012 Author Report Share Posted February 28, 2012 My only question is: WHY? You can buy red grog, and have a much more consistent product than you can make yourself. If you do make your own, it's best run it through a screen to get the right particle size. Generally, clay bodies will use a 30-80 mesh grog. And be sure to test. Some red bricks fire a lot lower than you'd think. Why, well because I am too darn lazy to drive the hour and half to the closest pottery store.... Link to comment Share on other sites More sharing options...
neilestrick Posted February 28, 2012 Report Share Posted February 28, 2012 My only question is: WHY? You can buy red grog, and have a much more consistent product than you can make yourself. If you do make your own, it's best run it through a screen to get the right particle size. Generally, clay bodies will use a 30-80 mesh grog. And be sure to test. Some red bricks fire a lot lower than you'd think. Why, well because I am too darn lazy to drive the hour and half to the closest pottery store.... I know how you feel.... Link to comment Share on other sites More sharing options...
trina Posted March 16, 2012 Author Report Share Posted March 16, 2012 My only question is: WHY? You can buy red grog, and have a much more consistent product than you can make yourself. If you do make your own, it's best run it through a screen to get the right particle size. Generally, clay bodies will use a 30-80 mesh grog. And be sure to test. Some red bricks fire a lot lower than you'd think. Why, well because I am too darn lazy to drive the hour and half to the closest pottery store.... I know how you feel.... So that Grog I made! Wow it so worked!!! I made some giant tiles with crazy faces I call them 'confetti people' will post the pic but too dark already. Anyway I made two, then got scared that it wouldn't work so I made another two out of paper clay knowing those would be fine, dried them for almost a month due to size and thickness and wacked on the glaze in their greenware state and fired them two days ago, kiln cooled and everything groovey! T Link to comment Share on other sites More sharing options...
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