Moza Posted April 19 Report Share Posted April 19 This is my first time firing my mug in a kiln (I use Mid fire clay) I used these segment: C1 (160c) 60min C2 (500c) skip C3 ( 1240c) 20 min C4 (room temperature) Each time I use my kiln my mug breaks Do you have any advice? Quote Link to comment Share on other sites More sharing options...
Hulk Posted April 19 Report Share Posted April 19 An image of the piece, err, pieces could help - character of the break, how thick/thin the ware, etc. What clay(s) are you using? About how long does it take to achieve 1240C? From peak, how long does it take to cool to room temperature? Quote Link to comment Share on other sites More sharing options...
neilestrick Posted April 19 Report Share Posted April 19 Are you bisque firing first? Quote Link to comment Share on other sites More sharing options...
High Bridge Pottery Posted April 19 Report Share Posted April 19 After looking at the manual posted in the other thread this controller seems a bit weird. T1 is the time taken to get to the NEXT temperature not the C1 temperature. That seems backwards to any controller I have programmed. C1 0020c, T1 0030m C2 0100c, T2 0030m C3 0100c, T3 0600m C4 1140c T4 0100m C5 1240c T5 0000m C6 0020c That should go from room temp to 100c in 30min and hold at 100c for 30min. Then it takes 10 hours to get to 1140c (you could speed that part up) and then up to 1240c in 100m (60c/h) Hulk and Rae Reich 2 Quote Link to comment Share on other sites More sharing options...
Moza Posted April 20 Author Report Share Posted April 20 16 hours ago, Hulk said: An image of the piece, err, pieces could help - character of the break, how thick/thin the ware, etc. What clay(s) are you using? About how long does it take to achieve 1240C? From peak, how long does it take to cool to room temperature? https://www.desertcart.ae/products/425093753 This is the clay I am using. around 1hr and a half to cool dowm Hulk 1 Quote Link to comment Share on other sites More sharing options...
Moza Posted April 20 Author Report Share Posted April 20 16 hours ago, neilestrick said: Are you bisque firing first? No I just fire it once Quote Link to comment Share on other sites More sharing options...
Moza Posted April 20 Author Report Share Posted April 20 16 hours ago, High Bridge Pottery said: After looking at the manual posted in the other thread this controller seems a bit weird. T1 is the time taken to get to the NEXT temperature not the C1 temperature. That seems backwards to any controller I have programmed. C1 0020c, T1 0030m C2 0100c, T2 0030m C3 0100c, T3 0600m C4 1140c T4 0100m C5 1240c T5 0000m C6 0020c That should go from room temp to 100c in 30min and hold at 100c for 30min. Then it takes 10 hours to get to 1140c (you could speed that part up) and then up to 1240c in 100m (60c/h) I will try programming it this way Quote Link to comment Share on other sites More sharing options...
neilestrick Posted April 20 Report Share Posted April 20 That's a steam explosion from firing too fast for the thickness of the piece, or the piece still being too wet. Let the piece dry completely, do a preheat for a couple hours. Be sure to vacuum out all the clay crumbs from the elements. Hulk 1 Quote Link to comment Share on other sites More sharing options...
Moza Posted April 20 Author Report Share Posted April 20 2 hours ago, neilestrick said: That's a steam explosion from firing too fast for the thickness of the piece, or the piece still being too wet. Let the piece dry completely, do a preheat for a couple hours. Be sure to vacuum out all the clay crumbs from the elements. sure Thank you Quote Link to comment Share on other sites More sharing options...
Mark C. Posted April 21 Report Share Posted April 21 classic fast firing with wet wares after you clean up the shards from kiln use a soft brush on a vacuum to suck small pieces from the element grooves -be gentle doing this. Quote Link to comment Share on other sites More sharing options...
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