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  1. Attempting to glaze very thin slip cast cups. The casting slip is a commercially mixed ^6 porcelain bisqued to ^05. I’m using a commercial transparent dip glaze recommended by the supplier. When dipped, the glaze remains completely wet on the cup and then sags and cracks off completely as it slowly dries. I know I’m in the dark without further information about the make up of either the slip or the glaze and that the real solution will be mixing my own glaze but I just wanted to make sure that I’m not getting something wrong in the mechanics of firing and application. My first thought is tha
  2. Hi all, Currently I work with mid-fire slip and glaze my work 'traditionally' to achieve quite muted, natural tones. I'm thinking about making some wares that I want to be BRIGHT and flat in colour - like popping, primary colours. I'm wondering what the best way to achieve this level of colour would be? In my experience using stains in glazes never seems to achieve the flatness I'm after. I would suspect a coloured slip might be the answer but again using stains only seems to result in pastels - what is the average ratio of stain to slip to achieve a full bodied
  3. I've been having problems with pitting in glazes lately and am wondering is it good practice to fire an empty kiln to burn off any potential lingering fumes to help glazes? Have been firing non-stop with about 2 months now, and in the last few weeks a lot of work is coming out of the kiln with pits. Have been in touch with my clay and glaze supplier and they are stumped! Have tried many firing schedules, from slow to fast, with up to 45min soaks at top temp and tried a drop and hold schedule but nothing seems to work. Have also tried bisque firing high to 1020oC with a 45min soak at
  4. Hi there. I have bought this glaze : https://www.potterycrafts.co.uk/Products/potterycrafts-stoneware-glazes/P2813 (firing range 1180 - 1250 degrees C). I have applied it to stoneware clay that I bisque fired at: I have been doing this for bisque: Section 1 - room -> 600 at 90 degree per hour Section 2: 600 - 1000 at 200 per hour Could anyone reccomend a firing schedule in degrees celcius per hour for me? I use an electric kiln. Will I need a soak or anything? Thank you, Lara
  5. Hi there. I recently glazed some items on white stoneware clay. The clay (White Stoneware PF560) was glazed fired after being bisqued at : room --> 600 degrees C at 100 deg/c per hour 600 -> 1230 at 150 deg/c per hour 20 min soak It came out really patchy and there are some air bubbles. If anyone could recommend good firing ramp for this glaze in degrees celcis with timing that would be great - thanks so much Terracolor orange Ember - https://www.scarva.com/en/gb/Terracolor-FS6031-Orange-Ember/m-1772.aspx was the glaze that didnt look very good! Cla
  6. I am interested in Your input... I want to tile my bathroom myself, using tiles I created with molds. So the tiles created MUST be WATER PROOF! Firing the green ware using a home kiln, using my 110v house hold run wiring. Finally after firing to bisque, glazing to fire. I live in a townhouse so extra venting or drilling is not possible. I know this venture is going to take forever unless Covid takes me. What kind of kiln? How and why. I use to help my mom when she use to do ceramics. Way back with cones and giant kilns. So not what I want nor need
  7. Hi All, I use Amaco mixing clear c-11 to thin out the colors of celedons (a proscribed use). Was wondering if I could use Amaco HF-10 the same way. Also to use in thinning the color and transparency of underglazes. Anyone have experience with this?
  8. Sorta beginner potter here! I recently came across some glaze I really wanted to try out! On the pint it says “apply to cone 04 bisque” but it fires to ^6...wouldn’t that melt my pottery into a puddle if my 04 earthenware clay was fired to ^6? Or is it referring to stoneware? What type of clay is best for ^6? Thanks in advance!
  9. Hi there, I have this vase with what I assume is some kind of reactive glaze, my knowledge of glazes is effectively zero at the moment. I just can’t find any examples or recipe for what it. It looks like lots of bubbles and the most similar I can find are chunky volcano glazes. It’s hard to tell in the photo but it’s very textured, the bubble outlines are raised but it has a slight iridescent shine at the same time. Does anyone know what this is called so I can do further research or have any related information? It’s much appreciated. Thank you!! Sample of Glaze Sampl
  10. I love HCSM 1 + 2 from John Britt's Mastering Cone 6 but I need a white semi-matte glaze. Has anyone had any luck adding zircopax to these glazes to make them opaque and white? I did some searching and couldn't find anything. Would love some feedback from the hive mind before I jump (more like fall) headfirst into testing mode. Thanks bunches.
  11. Hi folks, Today I was working on the Wedding Jar that I had made for a nephew, and was trying to accent their lettering for names and dates. I had stamped these in, but it was not quite clear so I cleaned them up and added a stain over top thinking to do a little mishima to bring the letters up. However, due to the curved surface I lost some of the letter forms. What to do. I used a small brush after engraving the missing areas to flow the glaze in, and that worked. At the same time I decided to use the brush with a white engobe to accent the flowers of the mountain laurel I had stamped i
  12. Hi there, I have Amaco Potters Choice glazes and they say that they should be fired to cone 5/6. I am very new to pottery and was wondering what this means in terms of the firing schedule in my Nabetherm kiln. I have been trying to get the effects as shown on their website but they do not look very similar! What would the different outcomes of cone 5 and 6 be? Thanks so much and really appreciate any help, lara
  13. I’m new to ceramics and recently bought a used kiln that’s quite old but works like a charm. i don’t really know what the numbers on the knobs are and I’m trying to bisque cone 06 and glaze cone 6. I don’t have pyrometic bars for the cone 06 bisque so any help on what the numbers on the knobs signify and how to reach the desired temp would be awesome. (I do have glass cone 6 bars)
  14. Hi everyone, i’m new to making ceramics and i have two questions. First one is that is it possible to paint your ceramics before it’s bisque? Second one is that please can somebody recommend me a good brand which has underglaze paints?
  15. Hello from a newbie to the forums and to ceramics! I’ve read info from the Ceramic Arts Network for a while, but I’ve just joined the forum tonight. I’m an intermediate handbuilder and beginner thrower looking to expand my skill set and absorb as much knowledge as I can! My ceramics teacher is a sculpture artist and not a ceramicist, so while I’ve learned a ton about handbuilding from her, there’s a lot she says she can’t teach me about glaze, special firing techniques, and advanced throwing. I’m looking to build a collection of great, thorough resources (forum posts here, names of
  16. Wondering what the closest frit/frits substitute would be for Fero 3134, Aus 4108 would be.
  17. I'm still trying to get my arms around this concept of "flocculation and deflocculation". Specifically, here is my question: If I measure a glaze's specific gravity, and it is "X", and I then flocculate the glaze by adding epsom salts, will I then find that the specific gravity of the glaze has changed? If so, will it be higher or lower? The flocculation process makes the glaze seem "thicker" so I am assuming the SG has increased, but ...........?
  18. Hi guys. I`ve purchased some Underglaze powder pigments. In description is written that I can mix it with water to use like an underglaze. I mixed it with water (5g powder to 10ml water; 5g -15 ml; 5g - 20ml) and draw to bisque pots. After it dries, color is easily removable with friction. I mean, if i touch paint, it comes off. Then I mixed 5g powder to 5g clay and 20 ml water. Difference was clear. Color was well balanced and it was not easily removable. So basically, in first method, I`m mixing water and powder, in second method Slip and powder. I wonder, is any of this method w
  19. Hi everyone! I just recently bought a used Cress FX27P electric kiln so I can start firing work at home. So I just recently started my first bisque firing yesterday at 4pm. It was more of a test fire, so I didn't put a lot of work in there, about 15 wheel thrown pieces. There were a couple pieces in there that were not fully bone dry so I set the firing speed at E, the slowest speed. I also put a pyrometric cone (04) in the sitter, 1 peep hole open, and set the thumb wheel to 1, and I set the timer to 16 hours so it can shut off at that time in case anything goes wrong. Throughout the day
  20. Hi, I was just wondering if anyone had tips or insight in how best to create bright colours with a matt finish? I thought I could colour the clay bodies and use a clear matt glaze but have found that the overall finish clouded or dull. Thanks in advance.
  21. Hi, I am using Flax Paper Clay Porcelain ES6000 to make some small flowers and the finished pieces are around 1cm thick at the fattest point. The issue I have is that I have no idea how to go about firing and glazing porcelain. Do I bisque fire porcelain? If yes what temperature should I fire to? Can I fire porcelain in the same firing as other clays (B17C Stoneware) ? Looking on the Scarva website it says the firing temperature is 1220ºC - 1280ºC but I am unsure as to what temperature the clay stops being able to absorb glaze? Thank you so much in advance!!
  22. Hello, My white gloss glaze has recently started pinholing I believe. We have been using it for years with no issue. i initially started with the kiln it is firing to temp. We fire slow bisque and slow glaze programs to 06 and 6. I have tried bisquing to 04 with a hold on the end but the defect came back... I have tried a hold on the end of a glaze firing (20 minutes) with little improvement. We have tried the ware with this glaze in 3 different kilns all have the same problem especially on larger ware. We have also tried wiping down the ware lightly with a sponge on both
  23. Hi, I am new to ceramic glazing. Are there any methods that can duplicate fire-based glazing on ceramics? I work at home, so i do not have access to kiln. I have read there are oven-based glazes and non-fire based glaze. How effective are they in terms of the glaze (will it be similar to fire glazed plate)? Thank You.
  24. I am making some drinking mugs for a Renaissance Faire. I am using Kentucky Mudworks Brown Bear clay body, one I have just started using recently (I LOVE the beautiful chocolate brown color after firing). I threw the mugs and then attached a shield-shaped slab piece on the front, and am etching out the name of our Ren Fest on the front. I love the idea of leaving the shield unglazed and just glazing the rest of the mug around it, but I'm afraid the etched out words/image will not be very legible since the clay is so dark. I tried to find pictures of similar things on the internet and couldn't
  25. Hi, I'm beginer in ceramic world. And i want to know how to make glaze same under photo. I tried many time but not sucessfull. Can you help me? Thanks
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