Friday, March 24, 2017

Primitive Technology: Termite clay kiln & pottery




Published on Mar 24, 2017
I built this pottery kiln and some pottery from termite mound clay to test an alternative clay source to my usual one from the creek bank. I started by making a large grate from ordinary clay. It was just under 50 cm in diameter. Next, I took dry chunks of termite nest and put them into the pit in front of the tiled roof hut. The chunks were crushed and water was added to slake the clay. The clay was trodden on to mix it. Dead palm fronds were added to the clay to stop it from cracking as it dried and to add insulation to the kiln. The mixture was trodden on again and then taken from the pit. A trench was dug to form the firebox of the kiln and a wall of clay was made in the front of the trench. A hole was dug into the wall to allow air flow into the firebox.
The grate was placed on top of the firebox and the walls of the ware chamber were built around the grate. When the kiln walls were finished, grate bars made from termite clay were placed into the firebox. Grate bars are important for fireboxes as they lift the firewood off the ground allowing air to move up through the fuel bed for more efficient combustion. Burning wood as a heap on the ground allows cold air to flow up and over the coals, cooling the kiln and leaving the air unreacted with the fire wood. It still works but is much less efficient than using grate bars. The finished kiln was 50 cm tall (above grate height), 50 cm in diameter and with walls about 12.5 cm thick. The pit/firebox was about 25 cm deep and 25 cm wide with grate bars sitting half way between the ground and the circular kiln grate above.
Next, for the pottery clay, I selected a termite mound built on red clay soil. I took it to the kiln area and slaked it with water and mixed it in a small pit. I crushed up an old grate from a previous kiln and mixed it into the termite clay as grog. Grog prevents pottery from cracking as it dries and helps prevent breakage when firing. I then shaped the clay into a small urn. I also made some barrel roof tiles and a smaller pot from termite clay. I then stacked the kiln with the termite pottery.
To fire the pottery, I collected a large pile of dead wood and started a fire in the firebox. I heard some explosions in the kiln early on and knew something broke but continued anyway. Within an hour the kiln had heated up well and the pottery was glowing red hot. By the second hour the temperature went down illustrating an important point: if you over fill the firebox with wood the kiln will choke it and not burn efficiently. Realising this mistake I merely let the wood burn down a little so more air could get through. By 2 hours and 30 minutes the kiln was firing nicely again with all the pottery glowing low orange (about 845 c or 1550 f). I kept it at this low firing temperature for another 30 minutes. The whole firing process took about 3 hours from start to finish, a relatively short period of time for firing pottery.
When I took the pottery out, one tile had broken and the urn had spalled (a piece of the outer pot broke off) possibly due to still having moisture in it. The urn was still useable though and I use it to water the cassava patch. The forge blower was well fired and is now immune to water damage, no longer needing to be carefully protected from the rain. I put it in the barrel tile shed for storage. I put the broken tile and spalled piece from the urn in a special heap of broken pottery. When I make pottery in future I can crush up these broken pots and mix it into the new clay as grog to strengthen the new ceramic items. Finally, I stored the good tiles at the barrel tiled hut as replacements for broken tiles in that structure should there be any damage in future.
Termite clay is good material for making furnaces and an OK substitute for good pottery clay should it be difficult to find a better source. The termites have already processed the clay by the fact that their mouths are too small to include sticks and pebbles into their structures. As a result, the clay is very smooth and plastic. Too smooth for my liking, in fact, I’m used to working with coarser clay that has silt mixed into it naturally. I find that termite clay is either too runny when wet or cracks too easily when drier. It was difficult to form into complex shapes and it took me 2 attempts to make the urn. But for forming objects like tiles it’s OK, it can be pressed into shape and it will hold without difficulty. In future, I’d be likely to use termite clay for mass producing formed objects such as bricks, tiles, simple pots (formed over a mould) and possibly pipes, thereby conserving the dwindling clay supply from the creek bank which I’ll save for more intricate pottery. In summary, termite clay is able to be used to produce basic pottery if no other source can be found. If you have a termite nest you can make basic pottery from it.

Tuesday, March 7, 2017

Gracie's Backyard - TEASER




Learn more at : http://www.possiblemedia.org/gracies-...

Gracie’s Backyard is an upcoming documentary film about the “northernmost commercial permaculture farm on the planet”. Located at 59 degrees North near Sunne, Sweden, Ridgedale Permaculture is a 5-hectare farm the integrates pastured eggs, broiler chickens, market gardens, agro-forestry systems (and more!) into a enterprise that creates livelihoods while regenerating landscapes.

Sunday, March 5, 2017

Early March Grow Room Update

1/4 This Is the Modern World - (Ep3) Art of France




Published on Mar 4, 2017
Episode 3/3
First broadcast: Feb 2017.
In the final episode, Andrew begins with the Impressionists. He plunges into one of the most wildly creative periods in the history of art, when France was changing at a rapid pace and angry young artists would re-invent how to paint, finding their muses in the bars, brothels and cabarets of Belle Epoque Paris and turning the world of art on its head. Monet, Degas and friends launched a febrile conversation about the role of painting in the modern world that would pave the way for just about every modern art movement of note, from the Cubists to the Fauves, from the Surrealists to the Existentialists and from conceptual artists to the Abstract Expressionists.

2/4 This Is the Modern World - (Ep3) Art of France




Published on Mar 4, 2017
Episode 3/3
First broadcast: Feb 2017.
In the final episode, Andrew begins with the Impressionists. He plunges into one of the most wildly creative periods in the history of art, when France was changing at a rapid pace and angry young artists would re-invent how to paint, finding their muses in the bars, brothels and cabarets of Belle Epoque Paris and turning the world of art on its head. Monet, Degas and friends launched a febrile conversation about the role of painting in the modern world that would pave the way for just about every modern art movement of note, from the Cubists to the Fauves, from the Surrealists to the Existentialists and from conceptual artists to the Abstract Expressionists.

3/4 This Is the Modern World - (Ep3) Art of France



Published on Mar 4, 2017
Episode 3/3
First broadcast: Feb 2017.
In the final episode, Andrew begins with the Impressionists. He plunges into one of the most wildly creative periods in the history of art, when France was changing at a rapid pace and angry young artists would re-invent how to paint, finding their muses in the bars, brothels and cabarets of Belle Epoque Paris and turning the world of art on its head. Monet, Degas and friends launched a febrile conversation about the role of painting in the modern world that would pave the way for just about every modern art movement of note, from the Cubists to the Fauves, from the Surrealists to the Existentialists and from conceptual artists to the Abstract Expressionists.

4/4 This Is the Modern World - (Ep3) Art of France



Published on Mar 4, 2017
Episode 3/3
First broadcast: Feb 2017.
In the final episode, Andrew begins with the Impressionists. He plunges into one of the most wildly creative periods in the history of art, when France was changing at a rapid pace and angry young artists would re-invent how to paint, finding their muses in the bars, brothels and cabarets of Belle Epoque Paris and turning the world of art on its head. Monet, Degas and friends launched a febrile conversation about the role of painting in the modern world that would pave the way for just about every modern art movement of note, from the Cubists to the Fauves, from the Surrealists to the Existentialists and from conceptual artists to the Abstract Expressionists.

Friday, March 3, 2017

1/4 There Will Be Blood - (Ep2) Art of France



Published on Mar 2, 2017
Episode 2/3.
First broadcast: Feb 2017.
Andrew Graham-Dixon explores how art in France took a dramatic turn following the French Revolution that ushered in a bold new world. From the execution of King Louis XVI and the rise of Napoleon Bonaparte - a figure who simultaneously repelled and inspired artists of his time - through to the rise of Romanticism and an art of seduction, sex and high drama, Andrew explores artists including Jacques-Louis David - whose art appeared on the barricades and in the streets - as well as the work of Delacroix, Ingres and the tragic but brilliant Theodore Gericault.

2/4 There Will Be Blood - (Ep2) Art of France



Published on Mar 2, 2017
Episode 2/3.
First broadcast: Feb 2017.
Andrew Graham-Dixon explores how art in France took a dramatic turn following the French Revolution that ushered in a bold new world. From the execution of King Louis XVI and the rise of Napoleon Bonaparte - a figure who simultaneously repelled and inspired artists of his time - through to the rise of Romanticism and an art of seduction, sex and high drama, Andrew explores artists including Jacques-Louis David - whose art appeared on the barricades and in the streets - as well as the work of Delacroix, Ingres and the tragic but brilliant Theodore Gericault.

3/4 There Will Be Blood - (Ep2) Art of France




Published on Mar 2, 2017
Episode 2/3.
First broadcast: Feb 2017.
Andrew Graham-Dixon explores how art in France took a dramatic turn following the French Revolution that ushered in a bold new world. From the execution of King Louis XVI and the rise of Napoleon Bonaparte - a figure who simultaneously repelled and inspired artists of his time - through to the rise of Romanticism and an art of seduction, sex and high drama, Andrew explores artists including Jacques-Louis David - whose art appeared on the barricades and in the streets - as well as the work of Delacroix, Ingres and the tragic but brilliant Theodore Gericault.

4/4 There Will Be Blood - (Ep2) Art of France



Published on Mar 2, 2017
Episode 2/3.
First broadcast: Feb 2017.
Andrew Graham-Dixon explores how art in France took a dramatic turn following the French Revolution that ushered in a bold new world. From the execution of King Louis XVI and the rise of Napoleon Bonaparte - a figure who simultaneously repelled and inspired artists of his time - through to the rise of Romanticism and an art of seduction, sex and high drama, Andrew explores artists including Jacques-Louis David - whose art appeared on the barricades and in the streets - as well as the work of Delacroix, Ingres and the tragic but brilliant Theodore Gericault.

Thursday, March 2, 2017

1/4 Plus Ca Change - (Ep1) - Art of France




Published on Mar 1, 2017
Playlist : https://www.youtube.com/watch?v=lliLj...
Episode 1/3
First broadcast: Jan 2017.
Art historian and critic Andrew Graham-Dixon opens his latest series with the dramatic story of French art, a story of the most powerful kings ever to rule in Europe with their glittering palaces and astounding art to go in them. He also reveals how art emerged from a struggle between tradition and revolution, between rulers and a people who didn't always want to be ruled.

Starting with the first great revolution in art, the invention of Gothic architecture, he traces its development up until the arrival of Classicism and the Age of Enlightenment - and the very eve of the Revolution. Along the way some of the greatest art the world has ever seen was born including the paintings of Poussin, Watteau and Chardin, the decadent Rococo delights of Boucher and the great history paintings of Charles le Brun.

2/4 Plus Ca Change - (Ep1) - Art of France



Published on Mar 1, 2017
Playlist : https://www.youtube.com/watch?v=lliLj...
Episode 1/3
First broadcast: Jan 2017.
Art historian and critic Andrew Graham-Dixon opens his latest series with the dramatic story of French art, a story of the most powerful kings ever to rule in Europe with their glittering palaces and astounding art to go in them. He also reveals how art emerged from a struggle between tradition and revolution, between rulers and a people who didn't always want to be ruled.

Starting with the first great revolution in art, the invention of Gothic architecture, he traces its development up until the arrival of Classicism and the Age of Enlightenment - and the very eve of the Revolution. Along the way some of the greatest art the world has ever seen was born including the paintings of Poussin, Watteau and Chardin, the decadent Rococo delights of Boucher and the great history paintings of Charles le Brun.

3/4 Plus Ca Change - (Ep1) - Art of France



Published on Mar 1, 2017
Playlist : https://www.youtube.com/watch?v=lliLj...
Episode 1/3
First broadcast: Jan 2017.
Art historian and critic Andrew Graham-Dixon opens his latest series with the dramatic story of French art, a story of the most powerful kings ever to rule in Europe with their glittering palaces and astounding art to go in them. He also reveals how art emerged from a struggle between tradition and revolution, between rulers and a people who didn't always want to be ruled.

Starting with the first great revolution in art, the invention of Gothic architecture, he traces its development up until the arrival of Classicism and the Age of Enlightenment - and the very eve of the Revolution. Along the way some of the greatest art the world has ever seen was born including the paintings of Poussin, Watteau and Chardin, the decadent Rococo delights of Boucher and the great history paintings of Charles le Brun.

4/4 Plus Ca Change - (Ep1) - Art of France



Published on Mar 1, 2017
Playlist : https://www.youtube.com/watch?v=lliLj...
Episode 1/3
First broadcast: Jan 2017.
Art historian and critic Andrew Graham-Dixon opens his latest series with the dramatic story of French art, a story of the most powerful kings ever to rule in Europe with their glittering palaces and astounding art to go in them. He also reveals how art emerged from a struggle between tradition and revolution, between rulers and a people who didn't always want to be ruled.

Starting with the first great revolution in art, the invention of Gothic architecture, he traces its development up until the arrival of Classicism and the Age of Enlightenment - and the very eve of the Revolution. Along the way some of the greatest art the world has ever seen was born including the paintings of Poussin, Watteau and Chardin, the decadent Rococo delights of Boucher and the great history paintings of Charles le Brun.