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#117541 Adding Low-Fire Liner To Glazed Stoneware Vessel?

Posted by ayjay on 30 November 2016 - 08:40 AM

I made a pot a while back in ^6 stoneware (ES5), it had a landscape picture on the outside that I'd made with both painted and sprayed underglaze. 


I was in a hurry to get it finished before an event but didn't have anything that needed glaze firing.


It went into the next bisque fire with a clear earthen-ware glaze (good at 1050°C)  on the inside and the outside left unglazed.


It's on my table now cos the wife likes the picture,  it still pings every now and again, but the first three weeks were like sitting next to an orchestra as the glaze crazed.


The glaze has to fit the clay - another lesson in not rushing, how many do I need?



#116925 Is Cone 6 Practical For Domestic Ware In The Uk?

Posted by ayjay on 22 November 2016 - 05:46 PM


  I'd be very interested to read your firing schedule Ayjay, and many thanks again.


PS: I've just had a look at Colin Jone's website where in his techniques he says he glaze-fires to about 1240c.  I've just taken some re-fired pots out of my electric kiln, fired to 1220c with a 30min soak – cone 8!!!



Here's how I fire mine Oly, all temperatures in °C, I don't think there's anything special or unusual in my firing, but it seems to work OK.


My pot are always completely dry before I fire them, I'll usually have a kiln half filled while I wait for more pots to fill it and I'll often candle it for a couple of hours every few days just to be on the safe side, the pots that go in later will probably have been in the wife's airing cupboard for a couple of days and I usually candle the whole lot again before I actually fire them.


I nearly always fire to 1210,  I've sometimes gone down to 1200 and sometimes up to 1220, (or anywhere in between, with different hold times) but always in between those two figures.


Bisque fire.

@ 100 - 600

@ 200 - 1050

hold 15 mins.


Glaze fire.

@100 - 600

@175 - 1100

@50 - 1210

hold 15 mins


A good clear liner glaze for ^6. (add Tin Oxide  - 4  for a White liner glaze) this glaze dries nicely on the pot can be handled without leaving marks and any runs or drips will rub off quite easily with a finger/soft rib etc.


Std. Borax frit - 20

Wollastonite  - 15

Potash Feldspar - 20

China Clay - 20

Talc - 6

Flint - 19


Colin does like to get his glazes moving, some of mine move plenty as it is, I wouldn't want to fire them any hotter.


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Here's a typical 6 cone from one of my firings.


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#115728 Once Fire Glaze For Glazing Greenware - From The Uk?

Posted by ayjay on 05 November 2016 - 04:22 PM

Never seen glazes specifically for once-firing. 


There are some (recipes). For leather-hard clay you need a high clay content in the glaze to counter the shrinkage of the pot being glazed - without it the glaze is likely to fall off as the pot dries. 


For dry clay you need to reduce the water content of the glaze - this is where CMC will help, it doesn't reduce the water so much as prevents it from reaching the pot.


If you just dip an unbisqued pot in ordinary glaze it's likely to create cracks at any joins/seams, or possibly just fall apart.

#114320 Leaf Impressions - Inspiration

Posted by ayjay on 05 October 2016 - 02:52 AM

Of course you don't have to make impressions.


Glaze dish white - place leaf over (PVA or Elmers will help) - spray green - leave leaf in place and fire.


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Another way (not my best result, I forgot to photograph that one before it sold) is to spray a leaf with glaze and just place on a glazed plate/dish before firing.


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#113914 Multiple Clay Explosions In Bisque

Posted by ayjay on 28 September 2016 - 02:24 AM

Can someone direct me to the inversion thread please. Still finding my way on this forum. Thanks. 



#113662 Does Ceramic Fiber Deteriorate?

Posted by ayjay on 23 September 2016 - 10:33 AM

I have no answers on this topic, I just stopped by to see the cat pictures. 


Me neither, and to make it worse my cat is a dog.


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#113420 Equipment/tool Shaming/bullying

Posted by ayjay on 19 September 2016 - 05:09 PM

I've been a tool user since I started dismantling mothers bicycle (for parts for my own) at about age eight: :D


I've also spent my entire working life (retired now) as a carpenter so I know a bit about using tools.


If i see someone using a tool incorrectly or inefficiently I'll try and advise them differently. If they have really rubbish tools I'll probably try and let them know diplomatically (unless it's carpentry and then it's no holds barred).


A woman in my class was trying to hollow out a sculpted form with a knife. I handed her a loop tool and suggested she try it.


She couldn't quite believe the difference.  Should I have kept quiet?


I make most of my own pottery tools, not that there's many,  mostly trimming tools and ribs, they may not look as polished as bought tools but covered in clay they all look the same, and they work.

#111934 Qotw: Epic Failures Anybody?

Posted by ayjay on 25 August 2016 - 02:11 AM

Nothing major here, I've done the glaze bottle shake with the lid only perched on top (TWICE) but I really can't come up with anything epic.


I've had failures of various sorts, I know I'm not the first to have had those exact things happen, it's the nature of clay.


If I've learnt anything from all those common errors and faults it's to slow down, or to be more precise, don't rush it - and always try and work with clay which is at the right place in terms of moisture/dryness.

#111067 Spray Gun Question.

Posted by ayjay on 07 August 2016 - 06:37 AM

I seem to collect spray guns but gravitate back to a very simple siphon tube sprayer available from Chick Tool Company: EZE TB-02P I think it runs about $30 (USD) but the plastic bottles are inexpensive, come with screw-on lids,  and are quite convenient to store pre-screened glaze (I screen mine to 100 mesh and have never had an issue).





I've tried quite hard (previously) to find something similar in the UK without any success. I must resolve to start looking again.


My favourite air-brush works on exactly the same principle and very rarely clogs up, unlike the needle models which seem to clog up just for fun.

#110962 Qotw: Clay Poem Anybody?

Posted by ayjay on 04 August 2016 - 02:39 PM

I'm not a poet, (but you're about to find that out for yourselves.)  I don't even really like poetry much, a lot of it makes no sense to me.


I used to enjoy reading Longfellow  (Song of Hiawatha)  as a kid, and Robert Service (Songs of a Sourdough) in my teens but that's about it.


(I just noticed the *song*  link there between the two, maybe that's significant).











Spin the wheel and form the clay,

shape it, until the moment is - Yay!

Glaze it in, glaze it out;  fire away.

To the show, no freebies today.

Everybody has to pay and pay.


With due deference to Lou Reed for the last line there.



#110567 Found New Textured Paper!

Posted by ayjay on 26 July 2016 - 05:51 AM


i have used wallpaper and have several pieces that came from sample books that the store said was outdated.  you might be able to find it in paint stores that sell wallpaper.  look for Anaglypta which is heavily embossed and the patterns are usually very large.



Also look for Lincrusta:  you can get samples. B)



#110087 Qotw: What Other Things Beside Clay Have You Mastered?

Posted by ayjay on 13 July 2016 - 02:42 PM

Sarcasm, I've had to give up: I'm just too good, and if I've learned nothing else in life I have learned that it's one skill where perfection is never appreciated.

#110078 Qotw: What Other Things Beside Clay Have You Mastered?

Posted by ayjay on 13 July 2016 - 10:44 AM

I'm not sure I've mastered anything, I've spent 50 years earning a living nailing bits of wood together, (mostly roofs for the last ten years, cos I like doing roofs, I'm reasonably competent at that.


I take photos of Butterflies and Dragonflies in the warmer weather, I'm not bad at that, most of my pics are opportunistic, I don't have the patience to wait or just go out looking for that one perfect shot.


I'm a reasonable cook, proper food, not just heating packet stuff, I do all of the cooking at home for myself and the wife.


I can drink beer, (but not if it's fizzy).


I could procrastinate for England if it was ever necessary.


It's not much is it? 


I may just be getting depressed now if I don't think of anything more worthwhile. ;) 

#109985 Spraying Mugs.

Posted by ayjay on 11 July 2016 - 06:50 AM

I'm fortunate in that I don't make pots for a living, I think if I'd started earlier in life I could have handled the production side of things , but the selling would have been a nightmare, not my cup of tea at all.


I too really appreciate all of Mark's input and the many insights that he provides into production pottery.


So I make pots for fun, I sell some along the way, but it's not really why I make them.


Spraying a large quantity does require careful planning if it's not going to take forever, (especially without running water in my garagio). I make a list (and rough sketch) of everything that needs spraying and plan what will be glazed with what and jot it down next to each sketch, then count up each mention for each glaze and make sure that I've done that many pots with each glaze before changing over.


The top hat worked surprisingly well, it appears to have actually deflected any glaze from the top 1/4" of each mug. I'll attempt to make a better one now, or even several of different diameters to get just the right overhang on each article.


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.........and clean insides........


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.......and no misses on the handles that were pre-sprayed with the airbrush :)

#109712 Qotw: Can You Do Whatever You Want To A Bought Piece Of Art?

Posted by ayjay on 02 July 2016 - 05:30 PM

Feel free to do what you like with anything you buy,  it's yours after all - no-one else's.


If I liked something enough to buy it with my own hard-earned cash, I'd be buying it cos I like it as it is.


If I'd felt the need to alter it I would have bought something else instead.


.......but I'm a simple sort of person - (simple as in uncomplicated). -_-