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JBaymore

Member Since 06 Apr 2010
Online Last Active Today, 10:07 AM
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#73445 1 Mug Survived - Great Morning!

Posted by JBaymore on 16 January 2015 - 10:12 AM

Try videoing yourself and watching it back. It is a lot easier to see what movements are working for the pot and those times where you touch it 10 times and nothing happens. Good way to improve your economy of movement.

 

I've been using video replay in throwing classes for probably 10-15 years.  It works great.

 

best,

 

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




#73407 Vote Vote Vote Vote Vote Vote

Posted by JBaymore on 15 January 2015 - 05:46 PM

Hey Potters Council members.........

 

It is election time again for the people who represent YOU.

 

Go here to vote online:  http://ceramicartsda...-board-members/

 

Or wait until the paper copy shows up in you mailbox, fill it out and mail it in.  (And no... you can't vote twice :P )

 

Do your civic duty to your fellow potters.................... and.....................

 

VOTE!

 

best,

 

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

 

PS:  Thanks to those that have done so already and those that are headed there right now. ;)

 

 




#73386 1 Mug Survived - Great Morning!

Posted by JBaymore on 15 January 2015 - 01:14 PM

Stephen.... did you ever get my throwing exercise skill development handout from my college classes? A lot of people here have done so... and seem to like it.

best,

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


#73378 Ceramic Fiber Body

Posted by JBaymore on 15 January 2015 - 12:51 PM

No... not true to my knowledge.  And I've "been around the block" on ceramic's tech side and also on the kiln refractories side of life.  The materials is very refractory.... and translucency is about the formation of large amounts of glassy phase in a body.

 

The fiber blankets themselves let light through to a degree...... due to the air spaces...... and refraction around the tiny fibers but that is not translucency as typically looked at.

 

Secondarily...... and FAR more importantly.......

 

Refractory Ceramic Fiber (RCF) is classified as a human carcinogen in the European Union... and "suspect" in the west.  The dust from this stuff should be considered basically like asbestos dust.

 

Look up the MSDSs for the materials.

 

There are some new forms that are being touted by the industry as "safe" or "safer".  One must remember that many industries do this kind of thing to get around studies that find a single product hazardous.  The new product has not had time yet to be studied in practical usage... so it is ASSUMED to be safe... because there is no data (yet) to prove it is NOT safe.

 

And the fibers are VERY irritating on skin contact.

 

So the last thing you want to do is add it to a clay body.

 

best,

 

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




#73010 An Observation

Posted by JBaymore on 07 January 2015 - 10:43 AM

 

  But Socrates said, "The only true wisdom, is knowing that you know nothing"....  

 

I tell my students that after they go through the inevitable period in ceramics in which they feel they know everything and are 'experts'...... they will find that they begin to realize how much they DON'T know.  And it is only then that they actually know something.

 

best,

 

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

 

PS: The C.A.D. IT folks are working on the issues with Internet Explorer 11. ........ and I can use the quote function again!  YAY to the IT team.  Thanks.




#72960 An Observation

Posted by JBaymore on 06 January 2015 - 12:28 PM

Yeah, but the American corruption of that saying is VERY telling....... both as to the education of the general public becasue they don't know the accurate version...and to the general attitudes held.

 

That saying is something that the Japanese would not understand.  The highest form of formal address showing respect is "sensei".... teacher.  You don't have to BE a teacher to get that address........ doctors and other highly skilled professional get that same honorific.

 

best,

 

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




#72660 Happy New Year All!

Posted by JBaymore on 31 December 2014 - 06:12 PM

May you all have a New Year filled with health, happiness, and many successes.

 

best,

 

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




#72353 Repeat Customers

Posted by JBaymore on 23 December 2014 - 05:34 PM

A lot here also can depend on what  kind of work you make.

 

For certain types of work and certain types of customers...... lots of repeat buying is possible.  For some other situations, that is less likely to happen even with customers that LOVE your work.

 

For example, if you are making something like $20 mugs for tableware use, the likelihood that a particular customer will purchase multiples of you pieces within short timeframes, and then replace them over time as "nature takes its course", and also buy some as gifts for friends is relatively high.  This results in frequent purchases in somewhat short time frames.... what a lot of people would call "repeat customers".

 

But if you are making pieces that are really high ticket items and maybe are more sculptural, the number of those that a single customer will purchase in a lifetime is likely more limited.  They are likely more of a "collector" of such work and at a certain point they will have established a good collection of your work..... and will move on to other's work for expanding their collection.  Every now and again... they will pick up a new piece of yours...... as your work evolves...... to keep the collection broad and fresh.  These people too are "repeat customers" even though they may not buy from you very frequently.  Because of the price points.... there is likely limited opportunities here for them to buy a piece as a gift (bit it can happen).

 

IN the first case.... you might sell to that person multiple times every year.  In the second it might be a single sale every year for a couple of years.... and then only one sale every few years.

 

Like everything in ceramics... the answer to this question is, "It depends".

 

best,

 

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




#72308 Joined Because Of All The Help From Forums

Posted by JBaymore on 22 December 2014 - 09:28 PM

Thanks for helping support studio ceramists by joining the (inter)national community of potters. 

 

Start thinking about entering the juried exhibition next year, submitting images for the annual calendars, writing for the Potters Pages, running a free ad in the Potters Pages, maybe being a mentee or being a mentor, joining a committee to help make the organization stronger, running for an Advisory Board seat, and so on.

 

And look into the credit card processing system, business and health insurance, and subscription discounts to CM, PMI, and books and DVDs. 

 

best,

 

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




#72214 Inside Mug Color Change

Posted by JBaymore on 21 December 2014 - 11:36 AM

OK... venturing into "dangerous grounds" here................  going off the "politically correct" spectrum........

 

This discussion above cuts to the core of one of the things I always mention in my ceramic chemistry classes.  Which I think is VERY important for students to really understand.  It gets to core ideas of "how the world works".

 

In general, how someone gets to be a "famous ceramic artist"........ is from the visually apparent aesthetic qualities of their work, the technical execution of the pieces (from a forming standpoint), and is often combined with the way they present themselves in public settings (exuding a professional feeling and being nice people).  Maybe add in a dose of "right place at the right time" serendipity, and also a bit of a "who you know" factor.

 

What this "fame" does NOT necessarily tell you is their depth of understanding of the technical sides of the process.  For all anyone knows... they flunked or got a D in their ceramic materials / ceramic chemistry / kiln design-building classes (if they ever had that kind of training).

 

They may have mastered the aspects of the process to get the visual result THEY use...... but that might be the real limit of their technical expertise.  They might even have had training that was not all that accurate, and are sharing that stuff once again, spreading the misinformation.

 

So just because "Famous Ceramist" shares some glaze recipe or some ideas on the technical side of things........ that does not make it automatically "truth".  There are things I've seen printed in studio ceramics oriented books that fly in the face of basic science and engineering principles.

 

Sometimes the information presented by "Famous Ceramist" is taken out of context, and then transferred to others incorrectly.  For example, a glaze used solely for sculptural work gets shared... and then a participant in a workshop comes back and shares it with their functional potter table-ware producing friends.  Suddenly it shows up on tableware.  Then that tableware potter (maybe who has little technical knowledge) becomes "famous"... and that glaze then goes on to be shared as a tableware glaze.  And so on.

 

Vet your sources folks, vet your sources.  Sometime the emperor has no technical clothes.

 

best,

 

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

 

PS:  Luckily, most of what we do is not "death incarnate".  But having a good grasp of some basics is important.




#72165 Inside Mug Color Change

Posted by JBaymore on 20 December 2014 - 08:22 AM

OK without doing ANY formal glaze calculation in Insight...... let's look at  that colorant supply. 

 

That's a total of 10.3 percent of metallic oxides.  There are few to no glazes that can hold that kind of saturation of such coloring oxides in solution as the glaze melt cools.  Just ain't gonna' happen.  So some of the coloring oxides are going to precipitate out on the surface of the glaze.  Any oxides that are in this condition are almost certainly subject to easy leaching into strong-ish acids and bases.

 

Then looking at WHICH oxides these are.  Copper is notoriously hard to keep in solution in glazes.  And at 4% that oxide alone is flirting with the top amount that can even closely be stable.  Then there is 4% of cobalt OXIDE.  That alone is enough to make the glaze almost black and be supersaturated.  The manganese is there just for good measure to totally make this absurdly oversupplied with colorants. 

 

Then take into account that this looks like a Cone 6 recipe.  At Cone 6 a significant amount of boric oxide glass is introduced to lower the melting point.  Boric oxide glass is softer than silica glass... so this is a less durable base than if it were at Cone 9-10 or higher.  SO the glass has a lower ability to hold the oxides that are still IN solution also.  (note... yes adding B2O3 in very precise proportions to the SiO2 can harden borosilicate glasses... but just looking at the recipe, I don't thik that is the case here.)  If this is getting fired atr cone 9-10....... worse... don't need that boron.

 

NOT a glaze for food bearing wares.  Period.

 

best,

 

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




#71883 Two Questions About Manganese Dioxide Use

Posted by JBaymore on 14 December 2014 - 07:59 PM

What get's ya' in ceramics are the unknown unknowns.  ;)

 

best,

 

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




#71867 Quick Consignment Deal - Need Confirmation :)

Posted by JBaymore on 14 December 2014 - 03:35 PM

Signed contract specifying all the details including that the inventory remains YOUR property while in that store, not his.  Also specify what happens is shoplifting, shop breakage, or shop "wear" occurs.

 

Otherwise.... no go.

 

best,

 

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




#71866 Two Questions About Manganese Dioxide Use

Posted by JBaymore on 14 December 2014 - 03:31 PM

I know too...... but letting others think about it.

 

best,

 

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




#71753 Production Potter Productivity

Posted by JBaymore on 12 December 2014 - 01:13 PM

Another aspect of this situation is HOW the people responding are thinking about the response.

 

If a question was posed in a PRIVATE situation (unlike a public posting forum) ...... then a person responding would tailor the comments to the specific individual, and the specific questions.

 

But in a public setting...... often what is being considered by the person replying is the fact that MANY people of varying experience and background levels will be reading the postings,......... and that the posting will be "out there" basically forever (This is the Internet we are talking about here).   And thinking about the impressions and ideas that will be gained by others reading the thread.  Sometimes there are a broad spectrum of potential considerations that go into the answer for a specific person... that might not apply to others situations or concerns..

 

So sometimes... in such public venues.....  questions are answered that were not asked... for a VERY GOOD reason.

 

best,

 

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