Friday, May 27, 2011

More Cone six re-fired pieces.

 I think the re-fire enhanced the red-brown of the slips and it brought out much needed gloss. As I understand it the reduction process is done in hopes of getting some other colors and I do have some pale blues here and there. In any case I'm pleased with how the surfaces bounced back. 







Wednesday, May 25, 2011

Wood Fire results and re-fire


 Tyler Gulden peers into the kiln which has cooled for a week...this was last Saturday.
 The door removed we could see that the results of the reduction experiment were not exactly what was hoped for.
 Most everything had a crystalline texture and though ash had clearly built up and started to flow on the work, at some point it devolved. 
 John levering separating some of his pieces of the kiln floor. Tyler's jar on the left was on the edge of the fire box and may still be stuck to the floor.


 There seemed to me to be a decent amount of color but very little wow factor.

 So these are some of my pots returned from the kiln. Overall I like the colors and the effects but I know that they are not what they could be. The rough textures make them less attractive as objects to hold and behold.



 This little tea bowl was the only piece I thought I would be able to use...it has a Leach liner glaze in and out and miraculously the surface of this one is what one would expect smooth like glass.
There was some talk of re-firing possibilities while we examined the results at Watershed. I culled the worst offenders and put the in my electric kiln with several pieces I was glaze firing to cone 6 and the results were great. Glazes that came out of the wood kiln looking like carbonized marshmallow liquified and flowed, rough edges became smooth.





 I really like this red watershed slip..





 recto
 verso
 interior
 These cone six bowls were not wood fired..just throwing them in...the manganese speckeling in this clay body is beginning to drive me crazy..maybe some clay slip could improve things.

Teaser shot for the Garden Blog...Daisey's home and planting my pots!

Tuesday, May 17, 2011

Catching up..and Wood-Fire at Watershed.

Its been a couple of weeks since my last entry and a few things to report now.
 I glazed a kiln load of earthenware that I had fired a Portland Pottery early this spring.
 And finally hooked up the envirovent..which was really easy, just had to hand-drill a few holes in the bottom and top of the kiln. The fan will exhaust any fumes from the firing up the chimney flue.
 The results...mostly fine but some bubbles in the glaze on some pieces..I may re-fire some.

 Some vessels in the wood fire clay body.
 Early last week I tried to throw as many large pots as I could...looking for flower pots!




 The next images were taken at Watershed Center for the Ceramic Arts in Newcastle, Maine. I joined a group of potters to fire the large wood fired kiln they have built under canopy of the new addition at their facility. 
 We gathered our bisque ware along side the kiln in preparation for loading.



 Tyler Gulden (in green) outlines the loading strategy...


 Wadding keeps the work from sticking to the kiln shelves.






 Dan kindling the campfire...a small fire begun outside the kiln to start the draft and a bed of coals...we fed this fire all night slowly moving caols into the fire box.


 An older catenary arch kiln nearby.









 The 'Train' kiln.


 A soda/salt gas fired kiln kindling off a winters worth of moisture.

 I took a bike ride down to Pemaquid Point before my second graveyard shift...Arr.
 Side stoking.
 After two nearly two days of constant wood burning we dampered down and sealed up the kiln in an attempt to starve the fire from oxygen putting the kiln into what is called 'reduction' while it cooled down from around 2200 deg. f to about 1625 deg. f.  This alchemical process promotes retention of colors outside of the normal range one would expect in an oxidized fire environment especially where elemental Iron is concerned. It will be a week before we see if we got it right.
 Flames licking around the closed damper

 Tyler feeding the reduction fire with wet sticks to slow the cooling process and promoting a slow reduction cool. The wood will smolder and attact any free oxygen away from the pots and to the combusting wood.


We open the kiln Saturday..after a week-long cool down.