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nairda

Member Since 26 Dec 2011
Offline Last Active Today, 07:10 PM
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Posts I've Made

In Topic: Does Anyone Pre-Weigh Dry Ingredients For Base Glaze?

31 March 2015 - 09:34 PM

When I'm weighing out one glaze, I usually weigh out 2 others at the same time.  I check to see what glazes I'm getting low on.

 

I use 2-gallon, heavy duty zip-lock bags (Walmart) and label them with the glaze name, # of grams and the date weighed.  I take my time, double-checking each material/weight as I go, so as to not dump the wrong thing in the wrong bag.  Usually 3000 grams is the most I mix up at a time and that amount in dry weight fits the bag well.  

 

It's easy to roll the bag around and mix the dry ingredients without creating any dust.  Then, when I'm getting low on a glaze, it's ready and waiting to be mixed. I've done this for years and it works great for me.    


In Topic: Calcining Alberta Slip Clay

29 March 2015 - 01:57 PM

Thanks. I went ahead and put about a tablespoon of it in a very small bisqued bowl in my kiln last night to test the outcome.


In Topic: Slab Roller Recommendations

25 March 2015 - 10:21 PM

The Bailey tabletop model is extremely heavy (70+ lbs in one piece) so it's not easy to move out of the way if you have a small work space.  The similar size North Star tabletop model is a little more expensive, but extremely portable (50 lbs) and it comes apart in 3 sections that easily fit on a small rolling dolly under a table when not in use. And the North Star allows for slabs of infinitely variable thickness unlike a shim-board style roller. 


In Topic: High Water Clays

17 January 2015 - 11:44 AM

I've made a few oil lamps over the years and found that some bodies/glazes will 'weep' lamp oil through the base even though the body has been fired to its highest maturation temperature with a well-fitting glaze.  Axner Pottery supply sells 'Lamp Liner'.  It's a liquid for coating the inside of a clay oil lamp that seals it extremely well.  Maybe 'water-tight' is different than 'oil-tight'.  Perhaps lamp oil has 'skinnier' molecules than water?


In Topic: Turpentine Pot, Herty Pot?

09 December 2014 - 07:29 PM

It was not hard to find Herty cups and a subsequent clay version (like a small loaf pan, but curved to fit the side of the tree) when walking in longleaf pine stands in the Florida panhandle in the 1950s.  Wish I still had the ones I picked up back then!  

 

From Wikipedia - "The initial Herty system utilized two v-shaped galvanized iron gutters to collect the resin. The simplicity of the method allowed it to be taught to the existing workforce in the turpentine industry. Herty's method yielded more resin that was also higher in quality; however, the most important success of this new method was that it lengthened the useful lifetime of the pine trees from only a few years to decades. This extended use not only saved the trees but the naval store industry as well. Herty's less destructive collection method also allowed the trees to eventually be milled as lumber.[10] Herty subsequently moved from an iron gutter to a ceramic one, and his involvement with the Chattanooga Pottery Company in the production of the ceramic gutters eventually led to the creation of the Herty Turpentine Cup Company in 1909."