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Everything posted by C.Banks

  1. OpenOffice is not friendly towards Eucalc. NeatOffice works much better.
  2. I'm trying to find cobalt in the materials list and analysis page but all I see is CO2 which, if I'm not missing something, should be a gas. It's always possible I'm being a bit dense somehow but I'm unable to see my way through this. Thanks for the software btw. It's helping move a couple of stalled projects. cheers *looks like I am using an old version - now the trouble is the v. 1.9 link for download is opening in read only mode
  3. I've heard of people using seawater to enhance or bring soda like affects. maybe a brine solution *sprayed on the pot not into the kiln, might be fun to try
  4. I'm wondering too now does the bag wall affect the flow or just the path? if the primary and secondary air remains unchanged then the answer could be no - the damper operates the same with our without bagwall. the bagwall does not change the supply of fuel or air. once the draw of a kiln is established the flow rate of gases should stay the same regardless of the path good question though gets a person thinking
  5. another way to look at percentages is with fractions or parts of a whole where 100% = 100/100 3% then equals 3/100 3/100 = 0.03 0.03 * 6000 = 180 I've recently and in the past had to consider partial bags to fulfill recipes where say we have only 32 pounds and the recipe requires 35 to get the percent of material on hand we divide 32 by 35 (32/35) which gives us 91.4% or 0.914 0.914 can then be used as our multiplier to adjust the rest the ingredients we can use up the last 32 pounds and multiply the remaining amounts by 0.914 to complete the recipe math people could explain better but this I'm able to retain and use when needed
  6. sounds like you are doing ok I'll slam wedge until the clay is mostly homogenous - takes about ten minutes or so. wedging after that is a quick process to get the clay lined up and weighed out.
  7. when I took up slam wedging my ability to prepare larger amounts of reclaim improved drastically if you aren't already maybe the technique will help
  8. this is also known as analysis paralysis. I know it all too well. I'm terrible for opening too many buckets at once and losing track of my well laid plans this also leads to the moments of panic when I sometimes lose track of which pitcher I just poured into what bucket I am ok with keeping it simple too. I use 1 liner and 4 others consistently. I have others that are best in cooler spots or atmosphere/kiln dependent but I'm still trying to keep these to a minimum.
  9. thanks, i try to wait before expecting too much from a new batch. it's been a while since I mixed up any clay so we'll see how long that lasts. I think I'll stick to 2 tbsp and maybe a bit of 'aged' wheel reclaim for luck. cheers
  10. hey, i found an older discussion and it started me thinking. IIRC I've used 1/2 cup apple cider vinegar to help a new 100lb batch along. I'm curious if two tablespoons of yogurt/kefir in a 100lb batch is enough. cheers
  11. That eutectic calculator looks very interesting. I can see how it would make some results easier to understand in conjunction with a UMF chart. Maybe with enough information even a somewhat dim bulb can get the bigger picture. I always like the idea that a gazillion monkeys could write Shakespeare too.
  12. Daniel De Montmollin's work is only fairly recently getting the credit it deserves. This being said ..."melting diagrams ... are not easy to find and hard to understand for the layman (aka potter)." https://wiki.glazy.org/t/the-practice-of-stoneware-glazes-d-de-montmollin/860 iirc the chart designed by Ray Thomas Stull was also originally intended for ^11 but does indeed have value for mid range glazes. The folks working to incorporate the two are waay more technically orientated than me but I imagine there is useful overlaps between stull charts, fuse diagrams and cone 6 limit formulas.
  13. Some folks trying to herd squirrels over at glazy: https://glazy.org/posts/166279 https://glazy.org/posts/110706 Eutectics make my head spin a bit
  14. Artisan or artisanal will, for most, still represent work made through traditional means. In this regard functional potters, for me, are still ceramic artisans. Strictly decorative work made by artisans is, in my mind, not exclusively artisanal. *please excuse the after the fact edit What I wanted to express is that artisanal work is not exclusively decorative.
  15. One of my favorite recipes is taken from John Brit's high fire book. It has gone through at least 6 versions over the last 4 years. The only thing that remains iirc is the amount of calcium. Despite extensively reworking the glaze to suit my liking I will continue to credit the source. Someone let me carry on the work and it feels right to admit as much, no matter how distant the outcome.
  16. Science for Potters - Linda Bloomfield Ceramic Glazes Cullen - W. Parmelee A Handbook to Pottery Glazes - David Green Cushing’s Handbook - Val Cushing As for calculation software, Digitalfire's Insight is ok but doesn't plot results on the Stull Chart. It requires a subscription. Hyperglaze is ok too and will plot glazes on the Stull Chart. It runs best on a Mac though. Richard Burkett is offering it free during this %^#*@ pandemic. Glazy.org has become an online cornerstone along with the Digitalfire refernce library. The software at Glazy is well put together and easy to negotiate. The Stull chart adjusts as ingredients are added or changed which is a nifty feature. All three offer much more more than my short description. Glazy in particular makes it easiest to find materials with similar compositions.
  17. Linking or 'pig-tailing' tanks from what I understand essentially increases the total volume and as a result does indeed prevent loss of gas pressure due to low volume frost build up.
  18. For me it's a matter of authenticity. It's unfortunate that the idea of race has persisted as a means of identifying what should, for my liking, be more accurately described as ethnicities. I'm only very lightly familiar with how the term 'race' has come into use and how the term, for a lot of people, is troublesome. It's also unfortunate and most likely an unpopular opinion that, in echo chambers, ideas that challenge the comfortable positions are likely to be ... misunderstood. I find it absolutely true that a pedigree is necessary to promote work as authentic. I also agree to a certain extent that nothing in art is pure but a work that lacks pretense will present as more honest. I know I can be a bit naive but I like to think an honest work will speak for itself. I also know honesty does not always translate into social or financial success.
  19. If you are looking for book recommendations Natural Glazes: Collecting and Making by Miranda Forrest is one of the best out there, at least for glazes.
  20. Again, I appreciate what you are trying to say but, for me, a chawan must be considered in a much larger context than a soap-dish. I can see why it's tempting to separate the idea of a chawan and it's form but it seems to me the idea of a chawan is very much tied to the ceremony the form is designed for. If, as you suggest, someone modifies an idea of a soap-dish the idea, for me, fundamentally changes. The authentic soap-dish becomes a dish that holds soap. I very much wish JBaymore could chime in here and set us all straight. He had a way of bringing clarity to a post. He is also one of the only people I know of that could approach something more than a just a bowl that holds tea. The cynic in me also sees how, unfortunately, a 20 dollar tea-bowl might turn into a 100 dollar chawan at the turn of a phrase.
  21. With all due respect a sponge holder holds very little, if any, cultural significance but I appreciate what you are trying to say.
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