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Bill Kielb

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About Bill Kielb

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    Advanced Member

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  • Location
    United States - Illinois
  • Interests
    All forms of constructionist pottery, education, analysis, design and repair as it pertains the ceramic arts community.

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  1. Yes 90 minutes is likely way too fast and for bisque the quickest I have seen is probably 12 hours. Burning things out of clay also takes time. Google common bisque schedules and you should find a nice smooth slowish ramp that you can use. Finally the Efco requires a separate control so the question is do you have the optional control? pictures below
  2. In my opinion The adapter success is not likely. The wiring needs to be rated at least 50 amps as well as the breaker and all connecting wiring. Best to let a qualified person review this and make everything safe and per code for your new kiln. The adapter is a no go in my opinion.
  3. I think this was Duncan fired in three to four hours I believe. Test kiln though so it will go 600 degrees per hour.
  4. Maybe even timing belt pulleys or ...... with tensioner placement you can get more surface contact on the drive pulley. Give a look at mscdirect.com (custom pulleys) automation direct or even maybe Allied electronics.
  5. Change it out to a decent belt drive with a tension pulley. Last forever and adjustable too.
  6. Just break out the old mass spectrometer I think I saw one on eBay.
  7. What do you consider high and low pressure? Low pressure natural gas is in the 7-11 inch range w.c. (way less than 1 psi) Most propane sold in bottles are compressed to a medium pressure. Low pressure natural gas uses larger orifices than medium pressure. Your burner choice usually dictates which pressure . A cubic foot of gas will combust and give off an amount of thermal energy. For natural gas it’s about 1000 btu, ( 300 w) ( per cubic foot and propane is about double that). So it comes down how many cubic feet needed. Most propane stuff like Liam’s weed burner are designed and sized for PSI pressure operation because that’s how propane is most available here in the states. A small Raku setup is probably 150,000 to 300,000 BTU and on two small propane bottles fires for 10 or more firings easily designed to operate from about 4 to 10 psi. (30-70 kpa)
  8. To all these stories, when I first started throwing I bought 50 pounds of stoneware that was so wet it was near Jello. I practiced so much with that, thinking when will I ever learn to throw taller than 6” vessels. Turns out it was great practice as now I throw most porcelains anyway I like and it seams easy. Standard 365 is easy and cone 6, 267 same but cone 9 I believe. I throw Laguna Frost right now because it’s really white and translucent even at 1/4”. It makes for great carved votives (translucency) and really white bowl interiors with clear glaze. Don’t like Bmix anymore - too messy for me now.
  9. There is a nine conductor 22 gauge low voltage harness from the controller. Pretty rare for it to fail but I guess one of the circuit board mating plugs could have. The rest of the wiring can be repaired or replaced with normal high temp stuff. I am curious to see a picture of what failed. Paragon is very accessible, see below.
  10. Several weeks back we had a request for dribble free spouts. At that time I attempted to take Neil’s pitcher and explain a way to do this. There were many good suggestions and I discovered it was difficult to describe one of the methods that we teach which is a sharp trailing edge that we sand at bisque time. It has proven effective and simple so for clarity we made a video for new students and it may interest some here as well. there are many ways to do this, but this is one way to think about it.
  11. @Min I have done it in a pinch and they definitely are a bit fragile but work
  12. Good question and no matter your preference most pottery classes should include hand building and maybe sculpture classes as well which seem to align more with your present desire. As to porcelain, it is clay and considered a little more difficult to use than other types of clay but it is clay nonetheless. I prefer to throw porcelain on the wheel, but my wife just finished hand building several Ikabana vessels. In the beginning I would not focus so directly on porcelain, instead I would find out if I enjoyed clay in general. In the end you may prefer Whitestone, Bmix, red clay, earthenware clays and yes porcelain based upon the item you are building. They are all clay and the basic pottery construction techniques apply. All books are great, but trying your hand might inspire you to continue and even seek more information about the specific thing / clay / technique you enjoy most. Potters are extremely diverse and creative for this reason, there is a lifetime of experience and learning to be had if one is interested.
  13. Very nice work there. While there are many books available my feeling is a course or two at your local pottery studio might be far more revealing. Pottery is difficult and yet very simplistic in that it has been practiced for centuries. The art, science and endless creativity is what draws many and their first experience throwing, building, glazing and firing often leads them to continue for a lifetime.
  14. Since this is a gas appliance and I presume the kiln shell is in reasonable, condition setting the damper and primary air on the burner will be very important as well as the quality of the fuel you have. Maybe some pictures of the burner, and kiln will reveal more. The default primary air position is about 1/3 opening I believe.
  15. The 800 DTC is a controller model not a kiln model produced by paragon I believe. I would suggest you get the actual kiln model and as many pictures as possible to review prior to purchase. FYI the manual is available for download online
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