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nairda

Member Since 26 Dec 2011
Offline Last Active Today, 08:33 PM
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Posts I've Made

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."


In Topic: How Forgiving Is Placement Of Posts Under Shelves?

20 October 2014 - 09:33 AM

If your kiln is vented through the bottom, you'll want to place your bottom shelf at least 1/2" off the floor; am guessing 1" might be better.  I use  I " supports beneath the bottom shelf because it allow for the vent to do its job and puts the shelf just a bit below the first row of elements.  As others have said, easier to scrape or replace a shelf than a kiln floor.


In Topic: I Can't See/find My Cone!

15 October 2014 - 07:02 PM

I always dipped the cone tip in some red iron slip.  Less than a 1/4".  While some say it will provide flux to the cone, I've put 'dipped cones' and non-dipped ones side-by-side in the kiln to see what effect it had; and they bent exactly the same.  Placed the cone pack as close as possible to the peep.  L & L kiln has good sized peeps so it was never too hard to see the cone at Cone 5-6 temps.


In Topic: Hobby Potter Teaching Others.

06 April 2014 - 02:46 PM

I am in a similar position - leading a community pottery.  I sent you a PM via this site.  Should be an alert in the envelope icon at the top of the page.  Perhaps we can share info.  I am also located in Virginia.  Thanks.