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Ginny C

Member Since 02 Apr 2010
Offline Last Active May 03 2016 09:16 AM

Topics I've Started

Large Platter Broke In Half In Bisque Firing. Anything To Do With It?

29 April 2016 - 08:18 PM

Lots of work went into this large (15" diameter) agate ware platter, but it broke clean in half during the bisque firing! I had it sitting on sheets of Bullseye kiln liner paper to allow it to slide on the kiln shelf. 


I'm sure it is now headed for the driveway, unless someone can suggest another use, or even a way to repair it. (Ha!)




Just to show what it would look like with a clear glaze, here's another piece I made earlier:



FYI, the patterned clay strips are placed on a thin slab of the same clay (Laguna B-Mix for cone 5) and rolled hard until they are basically one unit. Then this platter was cut to shape and placed on a canvas sling to form the gentle curve while drying to leather hard.  I placed a ware board under it (under the sling) at the right distance to give it a flat bottom.  In case someone thinks it wasn't dry...no chance! I'm sure it was thoroughly dry.   The process seemed to work, until...I opened the kiln!



Simple Wadding For Supporting Pots In Electric Kiln Glaze Firing

05 April 2016 - 02:51 PM

I have some very narrow little vases I'm going to glue to a separate base, also glazed, AFTER they are all glaze fired. I'd like to glaze them all the way down, so I will need to support them during the glaze firing, and I don't have small enough supports. Can i make wadding with just my regular B-Mix (cone 5) clay with maybe some sand wedged in?


I plan to glue the wads in place before placing each vase in the kiln. I don't have any of the usual suggested ingredients around, but I do have some sand!


Suggestions? thanks!

Slip On Greenware

17 December 2015 - 04:38 PM

I keep seeing photos of potters dipping a finished pot, greenware stage, into a bucket of slip.  I'm wondering what the various reasons for doing this are.  Obviously, a white slip over brown or red clay allows a nice result when incising a pattern or design. And of course designs can be put into the slip while it's still wet, with a finger.  But are there other reasons to use an overall slip? 


Just curious!



Writing With Mayco's Designer Liner Over Glaze?

16 June 2015 - 09:55 PM

Can I write names on mugs with Mayco's Designer Liner over an opaque glaze once it's dry? 

Do I need to put clear glaze over the lettering?  Or over all? Does clear glaze over another glaze make them run?


Can I put the liner on a bisqued mug and then, when it's dry, apply a transparent glaze over it? Or a celadon? Will the letters show through?


Anyone know?






Glaze Applying Too Thickly And Not Drying

13 June 2015 - 03:02 PM

I just dipped a mug in the Laguna Robin's Egg glaze I mixed several months ago from dry...and added bentonite to.  Today the glaze seemed a bit too thick in the bucket so I added a  bit of water and several drops of Glaze Thinner (forget what brand it is) until it seemed okay.  (I've used this glaze many times before and never had any problems.)


Two hours ago I dipped a bisqued mug (Laguna B-Mix cone 5 clay bisqued to cone 04) The glaze has stayed wet in places and run some into thick drips. If it ever dries (it's now outside on top of my hot kiln), I will try to brush and scrape it back to an even thickness, but I'm afraid it's starting to crack in places.   I know I might have to wash it off and let the mug dry overnight, but in some places it looks fine.  (I'd sure like to make it work. This is a special mug for my artist son...i'm going to write "breathe" on the side, at his request!)


Why did the glaze do this?  What do I need to add to it? 


Thanks, folks!

And John, I tried to find info on this in your FAQ, but I cannot tell from the very abbreviated topics shown what each is really about.  Could you put the whole topic title in that list?

And when I google glaze problems in application I see only glaze defects that show up after firing.


Ginny Clark