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perkolator

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    perkolator got a reaction from RichN in Adding A Frit To An Oxide To Create An Oxide Wash   
    You can use either Frit, Gerstley Borate, or make an underglaze with equal parts clay color and flux.  Frits, being fired material usually leave a gritty/sandy texture to the wash, some people use CMC, laundry starch, karo syrup, etc to help.  Usually I use GB and CMC gum solution, sometimes add a little bit of EPK in it too.
     
    Look up Linda Arbuckle's majolica notes, she's got a lot of suggestions for combos of washes.  Most are by volume, not weight.
     
    Here ya go: 
    http://lindaarbuckle.com/handouts/majolica-handout.pdf
    http://ceramicsweb.org/articles/arbucklemajolica.html
  2. Like
    perkolator got a reaction from Babs in Newspaper burnout in clay busts...help!   
    Main reason why I discourage people from using wadded newspaper and other armatures when hand building sculpture, they're usually unnecessary with proper construction methods and can create problems like you're experiencing.
    I'd bust out a drill and make a hole up into the neck cavity from the base, then get at it with extracting as much paper as you can.
  3. Like
    perkolator got a reaction from ppony123 in Making colored slip   
    pretty much any white slip recipe can be made into a colored slip. for most natural oxides you will use the same percentages you would in glaze recipe (so like 2% for cobalt carb = blue) if using a mason stain, you'll want to be up near 10%. my go-to basic white slip recipe is equal parts (25/25/25/25) of EPK, OM#4, Silica, and Custer Feld. you can easily tweak this recipe with flocculants/deflocculants or suspension agents to get the consistency you desire. this slip can be used at pretty much any temp range.
     
    for a raised slip/heavy surface texture, i prefer "Arnie's Fish Sauce" and i believe it's a midrange/stoneware recipe. Mix it THICK, like yogurt or even cream cheese. this can also be colored.
    43.6 Grolleg
    15.6 Silica
    23.4 F-4/Minspar/soda spar
    7.8 Pyrax/Pyrophyllite
    9.5 Bentonite
  4. Like
    perkolator got a reaction from D Walsh in Adding A Frit To An Oxide To Create An Oxide Wash   
    You can use either Frit, Gerstley Borate, or make an underglaze with equal parts clay color and flux.  Frits, being fired material usually leave a gritty/sandy texture to the wash, some people use CMC, laundry starch, karo syrup, etc to help.  Usually I use GB and CMC gum solution, sometimes add a little bit of EPK in it too.
     
    Look up Linda Arbuckle's majolica notes, she's got a lot of suggestions for combos of washes.  Most are by volume, not weight.
     
    Here ya go: 
    http://lindaarbuckle.com/handouts/majolica-handout.pdf
    http://ceramicsweb.org/articles/arbucklemajolica.html
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