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High Bridge Pottery

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Everything posted by High Bridge Pottery

  1. Ok, if it is saying 10psi input I guess that should be for propane. I don't think natural gas ever comes at 10psi. The only reason I was worries is if you are supplying the burners with a low pressure they wont get 60,000BTU as that is related to the size of the burner orifice and the pressure of gas you are supplying. I had no issue using a single control valve before a flat regulator on a 4x burner gas kiln. Actually found it much harder to get an even turn/twist on each burner.
  2. I am still not convinced that regulator is for propane pressure instead of natural gas. I think you need to find out what pressure that regulator is outputting. Whatever it is saying on the gauge wont matter once you hit the constant pressure the flat regulator is outputting. I may be completely wrong as nobody else seems to be worried and it's not a constant pressure regulator.
  3. 3-6 firings a tank seems a good ball park figure. Somewhere there ish
  4. 10,000 btu /ft3 is a good over estimate I find and propane has 21,500 btu/lb so 9 x 10,000 = 90,000 btu x 8 hour firing = 720,000 / 21,500 = 33.4 lb propane. You can probably half this number easily as you are not going full wack for the whole firing.
  5. How are these stacked in a glaze firing? I'm confused
  6. Them pesky eutectic. Maybe too much calcium? in corner C. It is reminding me of a tile I did with whiting and soda feldspar.
  7. Interesting question that I don't really know the answer to. Read through the pages a few times and it still doesn't make much sense. He says "the inlet-flue areas must be equal to the exit-flue areas" then below tells you to restrict the exit flue. The only thing I can think is he also mentions "If the exit flues are too restricted, this will slow down the flow and retard combustion efficiency" I guess maybe he is restricting it a bit but not too much to slow down the exiting of gasses without destroying combustion efficiency.
  8. Falcon heavy launch, probably the best thing I have seen all year.

    1. Show previous comments  3 more
    2. LeeU

      LeeU

      Envy.  As a kid, I saw a mid-'50's rocket launch from the swamp (with quicksand--I remember my aunt warning me not to go wading) directly across from Cape Canaveral. Have never forgotten the awe and majesty of that. I think about that uplifting (pun intended) experience sometimes when I am feeling really down about the idiocy/greed/hatefulness of the human species. 

    3. High Bridge Pottery

      High Bridge Pottery

      Would love to see one in person, it was awesome just watching the live stream.

    4. Denice

      Denice

      My husband, son and I were vacationing in Orlando and went to see a Space shuttle launch.  They had been having trouble with the shuttle so launches weren't happening very often.  We took a chance and got up at 3 in the morning and drove to a look out point.   They almost cancel it three times and then decided to launch,  the roar of the engine was impressive but the shaking of the ground so far away was amazing.  We could have been a launch guest,  my husband's second cousin was head of the space shuttle program.  We decided to watch from a distance and not bother him even though other family members had.  My in-laws were special guest to see the Hubble telescope launched into space.    Denice

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  9. I think I can picture what you are looking for but it's not something I have come across. Maybe a test will come to mind while I dream at night.
  10. Closest things I have is this tile with 100% soda feldspar or the one below with 50/50 soda feldspar and whiting. Never bought any neph. Cone10
  11. Have they used kiln props as burners or is there more shape to them? I can slightly see shape looking from above but hard to tell.
  12. So is it something just under Aluminium, got to be somewhere similar, maybe.
  13. I am sure it was a long road but I am happy to have shared some of it with you. Thank you for walking along side and showing your path to me.

    1. Joseph Fireborn
    2. High Bridge Pottery

      High Bridge Pottery

      My test kiln is still waiting on me 'finishing' the software so it works well. Keep getting a few weeks of inspiration then a good few weeks lacking any urge to program. Too cold and dark now to fire the gas kiln.

    3. Joseph Fireborn

      Joseph Fireborn

      Yea. Well I wish you luck figuring that out! I am sure you will nail it down soon enough. 

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  14. That's what I mean, is there a way you can get a figure for a sprayed, dipped or poured glaze. The more variables you can pin down the better.
  15. That has always been my confusion, how do you work out grams per inch? @glazenerd
  16. So looking at the tile alumina increases up and iron to the right? The pattern certainly looks like it's designed by bubbles but the bottom left is confusing me, is there a second bubbling happening because the bottom left seems the most mature/melty. Lowering alumina may increase it's viscosity change but does that mean it gets less viscous at top temperature or more? I think maybe it's less viscous and something else could be going on there. Just my initial thoughts. RE: Vertical/horizontal grids. I still think the best way is to extrude L shaped sections for each row of the
  17. @Joseph F There's no better place to post them. The thread started with Curts lack of finding a Currie tile forum so we started one here. I still remember the first tile I tried and spending 3 hours weighing out each individual glaze for each cup because I was clueless. Always generally interested in a test tile whatever you are testing out.
  18. I was thinking along those lines Pieter, maybe the SiC is adding more power to the other flux. There's no need to care about the bubbles but it is good to know they are still in the glaze and probably trapped by it being really viscous. Looking at the tiles it seems to me like the SiC is more like alumina than anything else, the high silica tiles with a little become more like a glaze you would find top left not bottom right. Iron reduction is to do with Fe2O3 > FeO Red iron oxide > black iron oxide
  19. I bet if you took a cross section the smooth ones would be full of bubbles. The pitting is just the beginning of them.
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