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Member Since 31 Mar 2010
Offline Last Active Yesterday, 06:11 PM

#107531 Longterm Glaze Issues | Sometimes Runny, Sometimes Breaks The Pots

Posted by Min on 25 May 2016 - 09:28 PM


They will break readily.


And eventually.  Maybe not today or tomorrow, but they're a ticking time bomb.



Classic love story. 


Girls meets bad boy glaze. 

Girl falls in love with bad boy.

Bad boy breaks her heart.


She tries to reform the bad boy.

Tries and tries to change him…. but it’s not in his nature, he’s a bad fit.


Girl needs to meet a nice suitable and well balanced boy.

Well suited boy won’t tear her apart and leave her in pieces.

#107522 Mixing Commercial Glazes To Create A Translucent

Posted by Min on 25 May 2016 - 02:40 PM

It might and it might not, only way to tell is to try it and see.


Another approach to take would be to take the clear glaze and add some stain of the same colour you like to it. You would have to weigh out the glaze and stain and take good notes so you can replicate it if it works.  trial and error 


Welcome to the forums  :)

#107431 Qotw: Do You Have A Story For Us, Featuring Tom Roberts (Aka Tjr) ?

Posted by Min on 24 May 2016 - 11:38 AM

Sad news. 


Tom dropped me a thanks too for giving him likes, gracious gentleman. He pm’d me trying to think if he had friends in my area of Canada that we knew in common, I’m thinking he had friends everywhere he went.


rest in peace Tom

#107344 In Search Of A Cone 6 Clear...long-Winded.

Posted by Min on 23 May 2016 - 11:10 AM

one more thought, how is the bisque and glaze firing done?  have you tried Hansen's firing profile for transparent glazes?

#107163 Firing A Bowl Upside Down?

Posted by Min on 18 May 2016 - 07:18 PM

Min-say a little more about the "...wax / alumina hydrate mix ..."  What is a good ratio of wax to alumina and--ignore my ignorance--do you mix wet wax and dry alumina???? I am beginning to work with porcelain (^6/electric) and this sounds useful to me! 


Hi Lee,


Just liquid (cold) wax resist and alumina hydrate. I don’t measure but mix up approx 1/4 to 1/2 cup wax to a heaping teaspoon of alumina hydrate, I add some food colouring to it as well so it shows up better on the white clay. Same stuff for brushing inside galleries, or anywhere 2 pieces of clay might stick. Don’t get it on any of the glaze or it will wreck the pot; it will leave a rough patch since the alumina hydrate won’t melt into the glaze. 


Porcelain can “pluck” since it has a higher percentage of flux in it than stoneware or earthenware, more flux equals more soft almost melty the clay gets. Keep your kiln wash in good shape too since porcelain pots can pluck on the foot if the wash gets ineffective.

#107078 Firing A Bowl Upside Down?

Posted by Min on 17 May 2016 - 02:26 PM

Make a wafer thin circle of clay a titch bigger than your bowl, dry it between batts or whatever so it stays flat then bisque it to same temp as bowl is bisqued to. Glaze fire the 2 pieces together. If your bowl is porcelain it might want to stick a bit to the waste piece so brush it with a wax / alumina hydrate mix before putting the bowl on it.


I fire all my covered butter dishes this like, lid separate on a waste piece. They are porcelain and stay true.

(from the kiln this morning)


Attached Files

#107007 Has Anyone Actually Made Pavers?

Posted by Min on 16 May 2016 - 07:11 PM

I would do the porosity test that Hansen suggests in this: https://digitalfire....ramics_105.html


edit: I'm wondering if it would be safer to use ready made pavers then cement your fired clay tile(s) onto it?

#107004 Underglaze Stuck To Shelves

Posted by Min on 16 May 2016 - 07:06 PM

Any chance they were bisque fired a bit hot? Kiln wash on shelves? I know some of the spectrum 500 series will flux at 04. 


Sorry to hear about this!  :(

#106880 Low Fire White Slip Recipe

Posted by Min on 14 May 2016 - 11:32 AM

I haven't used this for scraffito but have used it on low fire terracotta, it's super white and you can put it on thickly without problems. It's the fish sauce slip recipe with macaloid instead of bentonite. (I got iron speckles with white bentonite so I got rid of that and went with the macaloid, which I think is now called bentone or something like that) 



Minspar 200................. 27.50
Grolleg Kaolin.............. 40.80
Pyrophyllite................ 8.30
Silica...................... 17.00
Macaloid.................... 6.30

#106795 ^6 To ^04, Is It Safe?

Posted by Min on 12 May 2016 - 07:32 PM

Does not look like anything to be concerned with. MSDS here: http://www.hp.com/hp...a_us_eng_v2.pdf


The wax plus acrylic and styrene polymers are going to burn out leaving just the iron.

#106768 The Art Festival Plan

Posted by Min on 12 May 2016 - 12:27 PM

The quiet respect you show your customers is something I wish more vendors would do at festivals / markets. I appreciate that we all come with our own different personalities, customs and sales techniques and as I've been beside more than one vendor at a sale that go way over the top with smarmy obsequious greetings and salesmanship, (shudder), it's always a treat to be next to someone who shows your style of grace. 

#106767 Painting On 'jet Black Underglaze Stain' To Leatherhard Clay

Posted by Min on 12 May 2016 - 12:17 PM

I looked up the Jet Black Underglaze Stain since it's not available in my part of the world and the instructions from Bath Potters Supplies in England says to mix it with "universal medium". I'm wondering if there is some gum to help harden the underglaze stain in the medium? I know with the premixed underglazes I use that they dry quite hard and dust/smudge free. Also, since the "universal medium" appears to contain some flux it will help it stay on the pot without becoming too dry when glaze fired as some stains tend to do if used without a flux.

  • oly likes this

#106670 Giving Shoppers A Sense Of Scale

Posted by Min on 10 May 2016 - 09:20 PM

I agree with Neil that an egg would look odd next to a teapot. How about a teabag next to a teapot or a mug, a common flower next to a vase, an apple next to a serving bowl, an egg next to a batter bowl.... something in context and easily recognizable. 

#106583 Stoneware Hanging Planters

Posted by Min on 09 May 2016 - 03:12 PM

one more planter to add to this post, was thinking of succulents for it. (about 15" diameter, terracotta)


Attached Files

#106525 Does Anyone Know How To Achieve Similar Results To This?

Posted by Min on 08 May 2016 - 11:19 AM

I believe that is a Mathieu Casseau piece. terra sig like Chris said. 


http://www.cafethese...article_rcv.pdf (need to translate from French to English)