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Pottery Knowledge Quiz Of The Week (Pkqw): Week 1 And Introduction/answers Included


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#21 Evelyne Schoenmann

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Posted 31 March 2017 - 02:08 AM

Marcia: glad you arrived safely in Texas! Are you sure about quiz question no. 3? Since when is water bad for glazed ceramics? Come, drink another glass of wine and think it over.... ;-)

 

Mark: too bad you can't drink a good glass of wine.


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#22 Marcia Selsor

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Posted 31 March 2017 - 08:59 AM

I think it is the alkaline in the water or detergent. It has taken the outside finish off my sauce pans


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#23 Pres

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Posted 31 March 2017 - 09:33 AM

Yeah, I keep telling my wife that the Stainless cookware is fine in the dishwasher, but the rivets that hold the handles on seem to be a much different metal and that they are corroding away. :wacko:

 

 

best,

Pres


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#24 Chilly

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Posted 31 March 2017 - 10:44 AM

err, arrrgh

 

guessing on all but the last one.

 

d

b

b

c

 

I'd like to teach the world the answer to Q4.


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#25 Chilly

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Posted 31 March 2017 - 10:45 AM

And yes, I like this idea of a QuiOTW


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#26 dhPotter

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Posted 31 March 2017 - 11:28 AM

d

b

b - been doing glaze alkali resistance tests lately

c



#27 S. Dean

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Posted 31 March 2017 - 12:40 PM

Guessing at a few of these - 

  1. b. soluble salts

  2. c. mullite

  3. d. high heat and moisture

  4. c. insufficient drying of ware



#28 Pres

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Posted 31 March 2017 - 03:51 PM

Keep posting folks, I'm glad to see the participation here.

 

Over the years, I have seen and heard a lot of erroneous information and skill development that could be corrected with some research reading. Case in point, just the other day I was watching someone throw Left handed on the wheel, he had reversed the wheel so that it was going clockwise. He was throwing by using his right hand on the inside, and doing pretty well with everything. However, he never seemed to be able to handle more than a few pounds of clay at a time. I was throwing, and he came in to throw next to me. He had 3# of clay, had reversed the wheel and was centering the ball. Left hand braced in to the hip, tight hand pulling inward. . . . suddenly it hit me like a brick. I finished my pull, got up and re-positioned his hands so that he was bracing with the right, pulling in with the left. He found it so much easier, he was amazed. I asked him where he had learned to do it that way. . .he said in college, but no one had ever told him he was doing it wrong! During the next week he was throwing 5-^# at a time, no problem. He had been muscling the smaller amounts on to center, but could not do the same with more. Made me feel pretty good that I could help him out.

 

 

 

best,

Pres


Simply retired teacher, not dead, living the dream. on and on and. . . . on. . . . http://picworkspottery.blogspot.com/

#29 Mark C.

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Posted 31 March 2017 - 05:59 PM

Pres said (heard a lot of erroneous information)

‚ÄčThis could be a question of the week

I have a few top add to that topic .


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#30 glazenerd

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Posted 31 March 2017 - 06:28 PM

I went with vibration and sonic resonance because either would magnify any micro fissures in the glaze surface.  

 

I went with alumina on the saggar question: although it will probably end up being mullite. For the record however, you have to have high alumina in order to produce mullite in the body: so my answer stands!!!

 

Nerd



#31 Mark C.

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Posted 31 March 2017 - 07:14 PM

I went with the alumina as well- with C (mullet) adding strength as well--Alumina is a key to the strength -so really they both I feel are right.You need both as Nerd says one is not without the other.


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#32 Pres

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Posted 31 March 2017 - 10:57 PM

I will supply complete quotes to the answers.

 

best,

Pres


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#33 Pugaboo

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Posted 01 April 2017 - 09:36 PM

Here's mine. I'm 90% sure on #1. I am guessing on #2 since I've only read about saggars in a book or two and can't really remember much on it. #3 and #4 I'm 100% sure on. It will be interesting to see how many I get right or if I need to go crack a few more pottery books!

1) b. soluble salts
2) b. alumina (totally guessing)
3) b. alkaline detergents and water
4) c. insufficient drying of ware

T
Ps. This is great pres! What a neat idea I can hardly wait for the answers and for the next one!
The world is but a canvas to the imagination - Henry David Thoreau

#34 flowerdry

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Posted 03 April 2017 - 08:43 AM

What a great idea! Thanks for doing this, Pres, and please keep on doing it. I would like to request however, that we come up with a snazzy title for this weekly quiz. Maybe something that turns into a funny acronym. I wish I could think of one, but imagination is often lacking in me. Come on group...help me out.

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#35 terrim8

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Posted 03 April 2017 - 09:16 AM

Too late to answer? 

1B,2B,3A & 4C.

3A as shake,rattle & roll causes a lot of damage whether on a small sonic scale or larger. I still can't stop thinking about Mark's tale of kiln's and earthquakes! 



#36 Pres

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Posted 03 April 2017 - 02:50 PM

Never too late. However, answers will be posted on Wednesday. I promise! Oh oh oh, not to forget, so will the new quiz!

 

best,

Pres


Simply retired teacher, not dead, living the dream. on and on and. . . . on. . . . http://picworkspottery.blogspot.com/

#37 JBaymore

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Posted 04 April 2017 - 10:19 AM

Pres said (heard a lot of erroneous information)

‚ÄčThis could be a question of the week

I have a few top add to that topic .

 

Oh yeah.  Erroneous information............. in online forums, in books, in magazine articles, in youtube videos, etc..  The list is long. 

 

The internet has made it worse than it used to be.  He or she with the loudest voice or the most repetition gets heard.  Quantitative over qualitative.

 

I always come back to the simple concept of "Vet your sources".  However, even that can be difficult.

 

I'll share something I talk about in my technical classes and have written in some handouts, that pertains to caveats about getting technical information.  This viewpoint is not "politically correct", nor will all like it.  But I think it is a very important subject to bring up with students.  Causes them to think critically.  (I'm re-writing this idea here... not copying the text from my handouts.)

 

There is this person whom we'll call, "Famous Ceramic Artist".  (Yes, I realize that "Famous" is a weird first name. ;)   Could be a man...could be a woman.  Don't know. Don't care.)  Famous Ceramic Artist makes STUNNING ceramic work.  Universally agreed amongst art critics and other ceramic artists alike........ this person is making some astounding visual work.  They exhibit in all the "right places".  They get featured in magazines.  They get pictures in books.  Heck, they WRITE books.  They do countless workshops "spreading their stuff".  They seem to be everywhere all the time.  They have throngs of "groupies" following them.  Life is good.

 

Remember... Famous Ceramic Artist became "famous" because of the nature of the art work they created.  BUT...... as a by-product of that fame, everything they say and do now becomes "ceramic gospel".

 

So when this person writes an article or a book or presents a workshop.... technical information usually gets shared. Potters love this stuff.  We are all about sharing the "tricks of the trade".  Maybe it is how kilns work.  How they fire.  Recipes for glazes and clay bodies.  How to fix defects in work.  Why clay is plastic.  How to control warping.  The list of possibilities here is long.  All of this information is taken as 'gospel coming from on high' also.  Because of course, they are "famous".

 

As Paul Harvey says ....... "and now for the REST of the story":

 

What you don't know....... and which does not in any way take away from the wonderful art work Famous Ceramic Artist produces... is that this MFA graduate of GKWU (God Knows Where University)......... got a D in their ceramic materials science class and also in their kiln building and firing class.  And that was a "Santa Claus" grade to boot.  You won't be able to find that information out easily or at all.  No one would talk about it....... because.... well.... they are "famous" now. 

 

So .... clearly stunning work execution......... technical information....... not so much.

 

It is VERY possible to be a total master of the things that you do in your own work, without having a broad based knowledge of lots of technical aspects of the craft.  We merely have to look at the amazing work of so many indigenous folk potters of days gone by,...... and know that they could produce amazing work.  But they knew little of the technical side of things outside their narrow area of expertise.  They were not trained in formal science.  And they might even be producing that work based on what that THINK they know... but making false attributions of cause and effect.  All they know is that when they do X........ they get result Y.  And result Y is what they want in the work.  It works to get the result ....... so it is all that is necessary to know.......and it must be true.

 

Sometimes even the Emperor has no clothes.

 

So.... again.......... vet your sources... carefully.  And look to MULTIPLE sources

 

best,

 

......................john


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#38 Pres

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Posted 04 April 2017 - 11:01 AM

Yes, even books can be erroneous. Imagine the editing that took place once the world was known not to be flat!

 

 

best,

Pres


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#39 JBaymore

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Posted 04 April 2017 - 12:08 PM

Yes, even books can be erroneous. Imagine the editing that took place once the world was known not to be flat!

 

 

best,

Pres

 

Wait!  Not flat?  :)

 

Which means that knowing the writing date and edition number is important when reading books to put them into some context.

 

best,

 

.......................john


John Baymore
Adjunct Professor of Ceramics; New Hampshire Insitute of Art

Former Guest Professor, Wuxi Institute of Arts and Science, Yixing, China

Former President and Past President; Potters Council
 

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http://www.nhia.edu/...ty/john-baymore


#40 glazenerd

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Posted 04 April 2017 - 03:28 PM

And then there are those not so famous who take a lot of heat because they challenge those books.






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