Jump to content

JBaymore

Moderators
  • Content count

    4,465
  • Joined

  • Last visited

  • Days Won

    139

JBaymore last won the day on September 7

JBaymore had the most liked content!

Community Reputation

1,432 Excellent

About JBaymore

  • Rank
    Moderator
  • Birthday July 19

Contact Methods

  • Website URL
    http://www.JohnBaymore.com

Profile Information

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

Recent Profile Visitors

405,190 profile views
  1. Yes.... this. Thanks for beating me to it, Neil. best, ................john
  2. 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
  3. 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
  4. 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
  5. 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
  6. 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
  7. 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
  8. 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
  9. My Brent CXC is from the 70's.... still does it. best, ......................john
  10. 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
  11. 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
  12. 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
  13. I know it makes no difference. ceramics-wise .......... now I am just curious since it is being discussed here........ exactly WHAT it is. Never thought too much about it before. As I said earlier... not having thought about it much , I thought maybe it involved sulphur compounds in the clay. I know from my amateur radio experience (I'm a ham) that the aluminum tubing used for antennas does the same thing.... and you get lots of blackish mess on you when handling the tubing when building one. And for good RF connections we clean the crap out of it where it joins and put on an anti-corrosion preventer. Always assumed not that it is the oxide of aluminum.... but that it was corrosion that happened from other crap in the air. Enquiring minds want to know............ best, .......................john
  14. If it is abrasion, wouldn't that be aluminum metal then? (fits..... a grey color..... but darker?????) And isn't aluminum oxide whiteish? the CAS version 1344-28-1 version is. best, .........................john
×