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Iforgot

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Everything posted by Iforgot

  1. Hey Potters, In order to promote studio safety i have been going through all the raw materials and sorting them in to groups of toxic and non toxic. The problem is that i have been hearing so many different answers to what is toxic and non toxic, first i used Laguna's raw material catalog which has every toxic material marked, but that list lists even feldspar as being carcinogenic. So, then i consulted a local potters guild who said that rutile, lead, and barium carb are all i need to worry about, then website after website has something different to say. So, what do you guys use in you studio's to determine toxicity? What raw materials do you consider toxic? Thank you so much! Darrel
  2. Okay, I have 2 good gray recipes at my studio, next time im by there ill write down the recipes and post them.
  3. Oxide Wash

    Sean, My favorite oxide wash is a Rutile wash, just mix 50% rutile, 48% gerstley borate, and 2% bentonite. Mix with water until about skim milk consistency. This provides a warm yellow on majolica, a great brown at midfire, and a really cool textured orange under celadon at ^11. Darrel P.s. Bienvenue! Je suis content que vous utilisez cette grande ressource pour vos questions et préoccupations!
  4. Glaze Help Needed!

    You could also try adding CMC gum solution, a commercial suspension agent, or glycerin a tablespoon at a time. Darrel
  5. I have a few recipes, if you want them, however adding a black stain to a white matte is the easiest solution. Darrel
  6. sold to his first gallery

  7. Hey Potters, I need a grey or lavender celadon glaze for cone 6 oxidation that is compatible with a white stoneware body rather than a porcelain. Thank you so much! Darrel
  8. "Stuff"

    Im collecting cow dung ash and dirt from various places. I figure that I can make an ash glaze and a slip. Darrel
  9. "Stuff"

    road kill bags................OK, you have the lead so far. By-the-way. if anyone want tumbleweed ash. I'm taking orders for this year's crop. Harvesting starts around October and really never ends. Jed Totally, who doesn't need tumbleweed ash. E-mail with order information, or I can email you. You can reach me at darrelspottery@gmail.com. Darrel
  10. Glaze ?

    Yes, 20 grams of frit 3249
  11. Glaze ?

    This recipe is a ripe cantaloupe color. EPK14.00g Silica26.00g Wollastonite14.50g F-4 Feldspar24.00g Frit 324920.00g Add 5% of Mason stain 6121 Good Luck! Darrel
  12. Hello Potters, I am having a bit of an issue. I got an electric kiln for my home studio fairly recently, and because I don't make a huge amount of work from my home studio I have only glaze fired a few times. Well, the max temperature for my kiln is cone 6 and I fire all of my work to cone 5 and the big issue is that every glaze firing I do takes between 14 and 16 hours. First of all, this is a lot of electricity, and secondly, when unloading all of these firings I have noticed that not one of the cones on the cone pack have bended at all, and the cone in the sitter isn't bent, it's broken. No to mention that none of these firings have been successful, glazes are under developed, spots in clay bodies aren't showing up, and gloss glazes are turning out matte. So, is there any way that I could possibly make some change to my kiln that would make it's max temp be like cone 8 or 10? Then perhaps if it could fire hotter, it could fire to cone 5 with more ease. Thank you! Darrel
  13. glaze

    Well, in that case, if a glaze recipe dose not contain lead, cadmium, barium, manganese, or any other harmful material then is having leach testing for lead, cadmium, and the like pointless? Darrel
  14. Kiln issue

    Darrel, A few questions that might help us figure out whats going on with your kiln: What brand kiln is it? What is the model #? What phase and voltage is it? (check the mfg tag) Its odd for a cone to break in the sitter, are you sure you have it in correctly? Answer these questions, and I can give you some more specific information on how to test the elements, providing you have a multimeter (if you dont, go get one--it'll cost you 15.00 for a cheapie digital one that can read resistance and you will find it indispensable.) My kiln is a Duncan DK716-2 and it is a 240v single phase. I currently do not have a multimeter however I will get one in the next couple of days. Thank you so much for your help! Darrel Also, yes I am putting the cone in the sitter correctly, the sitter works perfectly for bisque firings, just not for ^5.
  15. Kiln issue

    Darrel, A few questions that might help us figure out whats going on with your kiln: What brand kiln is it? What is the model #? What phase and voltage is it? (check the mfg tag) Its odd for a cone to break in the sitter, are you sure you have it in correctly? Answer these questions, and I can give you some more specific information on how to test the elements, providing you have a multimeter (if you dont, go get one--it'll cost you 15.00 for a cheapie digital one that can read resistance and you will find it indispensable.) My kiln is a Duncan DK716-2 and it is a 240v single phase. I currently do not have a multimeter however I will get one in the next couple of days. Thank you so much for your help! Darrel
  16. B- mix 5 chips easily

    What brand B-mix are you using? Darrel
  17. Aluminum Foil Sagger Firing

    You can fire in saggars in an electric kiln, however aluminium foil will vaporize by cone 6, and the fumes are quite toxic. The only saggar firing i do in my electric kiln is to wrap my pots in 1 sheet of newspaper and two sheets of aluminium foil and fire to cone 021, this gives me a very uniform black that I cant get from sawdust firing. Good luck! Darrel
  18. Toxic Raw Materials

    Thanks for the link. I am really looking for what i can't touch, because we have very strict inhalation and ingestion prevention in the studio, but i need to know which glazes i need to use while wearing gloves. Darrel
  19. 06 Majolica base glaze

    I have a recipe that is for firing at cone 04, stroke n' coats will lose none of their color at ^04. This recipe can be brushed to dipped, try to keep the application thin though. Linda Arbuckle Majolica: frit 3124 65.8 F-4 feldspar 17.2 EPK 10.8 neph sy 6.2 100.0 + tin 4 + zircopax 9 + bentonite 2
  20. Questions about using wax resist

    The turpentine is not necessary. Beeswax, paraffin, beeswax + paraffin it all works. wax in the kiln will not cause adverse effects on non- waxed pots. The reason for this is that wax completely burns out at around 800 degrees, before the glaze begins to develop at all. However, too much wax resist fired in an electric kiln is very bad for the kiln, but unless you are dipping and filling every pot with wax resist you don't have to worry about anything. Also, you do not need to scrape the wax off. Good Luck! Darrel
  21. Brushing rutile wash decoration on the surface of leather hard porcelain pots is the best.
  22. Oldie/Newbie

    Look up a potter named Sumi Von Dassow, she is one of the most brilliant potters in the country and she knows almost everything there is to know about pit firing. She has a book and DVD available on ceramic arts daily. Good Luck! Darrel
  23. making petrified wood

    I'd think that loss of carbon, especially on or close to the surface, is a realtively quick process.So as long as you have oxygen around and the tempearture is sufficient, decarburization is almost inevitable. Naturally, if you shorten exposure time to oxygen, you may, potentially, keep more carbon deep inside, but will you achieve your goal then? How about this... Place a piece inside of a saggar. horse hair or other combustables on the pottery. Low fire it in an Argon environment. Continue the Argon until about 600 degree on the cooling cycle, then stop the Argon. The result, horse hair pottery in an electric kiln?? OK, Ok I realize my dream is fading fast. WHy would anyone go to that much effort when the original method of horse hair pottery works so well? If you really want to do horse hair in an electric kiln, place pots on top shelf, heat to cone 019 remove with tongs and place on firebrick. Then drape the hair on the pots. The whole process takes about 4 hours including cooling.
  24. Pricing Labels

    I was a show recently and a potter had printed out her "logo" (a beautiful landscape photograph) on cardstock and cut it into large tag sized pieces and wrote the price on the back, punched a hole in it, and tied it to the pot with a kind of jewelry wire that likes like that really bendy green garden wire, just silver, and because it was sturdier than string she could tie her tags to the smallest little curve in a pot, otherwise, if the piece had no neck or place to tie it she would tape it to the foot. I have rice paper tags that I tie on with string or place inside the pots. Good Luck! Darrel
  25. Recommended Glazes

    I would recommend Snowy Plum by Coyote.
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