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JBaymore

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JBaymore last won the day on September 7

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About JBaymore

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    Moderator
  • Birthday July 19

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    http://www.JohnBaymore.com

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  • Gender
    Male
  • Location
    Wilton, NH USA
  • Interests
    woodfiring, Japan, Chado, Iaido

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  1. Another "trick" with food coloring is for brushwork. I use red food coloring like "ink" to do a "layout drawing" on a piece before going with a ceramic pigment. red always burns out. (I had a blue that left traces once.) best, .......................john
  2. Buying A Gas Kiln

    Only way to know current pricing is to call. And ther are a few "options' that are dependent on the particular installation plan... that can vary the costs. Call 1-800-431-6067 for a quotation. https://www.baileypottery.com/Kilns/Gas-Kilns/Studio-Deluxe-and-PRO-Front-Loaders Remember that you are going to need to ship it... and that you'll likely need a jobber to get it into the space.... and that you'll need the gas supply hookup....... and that you'll need to vent it. In VERY round numbers..... the kiln's price is going to be maybe half of the total costs involved. best, ....................john
  3. Yes.... this. Thanks for beating me to it, Neil. best, ................john
  4. Tyler, The UMF is one piece of data in the exploration. It is not the only one. Physical tests of varying types supply others. Any conclusions come from amazing all of the possible data and then trying to "connect the dots". Anyone who has looked into this subject knows that material sourcing has a huge impact as well as firing cycles. UMF is just one component. best, ....................john
  5. The ability of the computer to do the math fast allows you to spend the time analyzing the large amount of DATA you can generate, and then making conclusions or hypotheses from that data....... instead of spending that time doing repetitive math steps. THAT is the main reason to use it, and the driving reason that I did the program I did "back in the day". best, .......................john
  6. This is a huge "understanding issue" in the studio ceramic community. And also not understanding that using something like the word "copper" does not apply to all of the possible FORMS of "copper" and that they can have very different properties when it comes to the toxicological aspects. Hazard to US / Hazard to Others. Very different beasts. As likely over-generalization ...... hazard to us is probably always the larger issue. best, ..........................john
  7. Raku Question

    Nope, Lee. Cone 6 clay fired to cone six will probably have a 99.999% chance to succumb to thermal shock, either on the way up or the way down. If there is ANY chance for survival for this cone 6 work, it should be put into a totally cold kiln and heated with the first load. And take it up a bit gently. Then pulled, and QUICKLY put in a container with combustibles, and LEFT there til it is cool. Absolutely NO quenching. The body will not be like bisque..... meaning non porous. That quality is what allows raku ware to deal with the stresses of rapid and uneven heating and cooling. It is also what allows smoke to penetrate into the body and casuse the "black" stuff. best, ...........................john
  8. Raku Question

    Lee, Do you mean cone 6 stoneware that has been bisqued to some lower cone? Or do you mean cone 6 stoneware that has already been fired to cone 6? I've seen people use bisque (to something like cone 09 to 04) cone 6 clays in American Raku. They seem to work OK. best, ..........................john
  9. I stopped writing and selling glaze calc software as the programming technology sped rapidly away from me . Wanted to be a potter.... not a programmer. I started on a mainframe in college and with .... punch cards! Learned machine code, Fortran4 , COBOL, and BASIC. Continued a bit into early Visual BASIC..... and haven't had time since. Yeah, in some ways it was easier before the heavy display graphics business took over for very "mathematic / chemistry" input/output. I can still do it by hand.... but I 've gotten "lazy". best, ..........................john
  10. That's how I learned Tyler, "a long time ago in a galaxy far, far away" at UMass in the late 60's. Used a slide rule to do the math. Keeping track of decimal points was a real bear. When I teach glaze calc I always teach people what the software is doing because like you, I believe that an understanding of "what is under the hood" is important to really "get" this stuff. The repetitive math steps and table lookups is what eventually drove me to write early glaze calc software for a PC about 1979-80. Thanks for sharing this stuff. best, ................................john
  11. My Brent CXC is from the 70's.... still does it. best, ......................john
  12. Part of the concept of "Total Body Burden". Add those sub-micron smoke particles to the silica dust us potters deal with. This is all complex 'big picture' stuff. best, ..........................john
  13. Duh! Thanks Tyler. The brain hears "aluminum" when we talk wheelheads... and the brain assumes PURE aluminum. Makes sense. Best thought I've heard yet. best, ......................john
  14. I know I almost never used that before... and still don't, Lee. And I'm guessing that just like all of us, everyone is finding their way around the new forum software... and many may not have "found" that function yet. Just a guess. But it could be something else also. Joseph is pretty "up to speed" on the forum at this point... so like it usually is... potters helping potters . best, ...............................john
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