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About C.Banks

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  • Location
    : Canada
  • Interests
    bricks, burners, fire and clay

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  1. You should share pictures if it's ok. I enjoy living vicariously through other peoples kilns.
  2. Don Reitz used to tumble stack. I had a great video saved but can't find it on this new win10 desktop. Searching again this morning reminds what a character he was. https://www.smithsonianmag.com/blogs/archives-american-art/2018/07/06/acquisitions-don-reitz-papers/ some tumble stacking in the first few minutes - loading starts around 1:30
  3. I'm ignorant of most of the sometimes confusing details but while it's possible to mix glazes and lower the firing range, clay is a different matter all together.
  4. if this is the case a soak might help or it could make it worse but then you'd have more clues anyway
  5. I'm sure you've considered it but I'd suspect glaze thickness or your clay body which looks speckled?
  6. Anyone have any experience with the Duralite 70d or g high alumina hard bricks? I'm curious how they compare to Moflints in a soda kiln. cheers
  7. Ryan Coppage, PhD along with Ruhan Farsin and Laura Runyen-Janecky, PhD published a similar study. The Scribd article has been deleted but thankfully it's still available: Techno File: Dirty Dishes http://www.ryancoppage.com/research-and-publications.html
  8. I found this image the other day and it reminded me to be brave and find something new to say.
  9. I've seen a recipe for clay that encorporates volcanic ash as a feldpspar but the book is not availabe to me at the moment. Volcanic ash can be substitued for feldspar in a glaze but will encourage crazing. Leachs clear glaze accepts volcanic ash nicely at cone 10 but does craze. Small additions of clacium carbonate or silica can help fix crazing. custer feldspar(volcanic ash) = 40 silica = 30 calcium carbonate = 20 epk = 10 This glaze might be considered non-durable because of it's oxide ratio but "...calcia usually hardens a glaze and makes it more scratch
  10. Please be careful with fluorspar/cryolite/lepidolite. For some the drawbacks associated with it's use are not worth it.
  11. I grew up around mining so I'm well aware of the consequences of resource extraction. The original question was about how we felt about the possibility of our use of cobalt suppporting child labour. Responses encouraging the stockpiling of cobalt to take advantage of market fluctuations seems a bit off topic to be perfectly honest. I know this is a prickly subject but this question opens up a whole slew of things we take for granted.
  12. I was thinking more along the lines of doing without cobalt or finding alternatives rather than buying in bulk. My 0.5% cobalt glaze is another 'just a drop in the bucket' but it is mine and every once in a while I get to wondering just how special is it. I know a black glaze can be acheived without cobalt but, of course, batteries are a different issue. Alternatives to Cobalt, the Blood Diaomond of Batteries - Can scientists find a way to power our phones, robots and electric cars without cobalt. Maybe technology will save us sometime in the future. It's a nice thought but
  13. Apple and Google named in US lawsuit over Congolese child cobalt mining deaths I wish there was an option other than not using cobalt altogether. Skutterite might work if a person could work around the arsenic issue.
  14. Tip Toland has some videos if you aren't already aware of her. Maybe something she has out may help.
  15. I think you might be missing the point. A shamrock will always symbolise Ireland. To use a shamrock and not acknowledge it's heritage is a lot like not citing another authors work. Even though made by many cultures an amphora will always be associated with ancient Greece. It seems reasonable enough to admot this. So to answer your question yes, if a person is using a shamrock or amphora or indigenous motif they should be prepared to admit it's cultural significance.
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