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Home / Products tagged “lichen-effect”

lichen-effect

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Lichen-effect medium grey form
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Lichen-effect medium platter
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Lichen-effect small grey form
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Lichen-effect small grey form
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Lichen-effect small grey form
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Lichen-effect small grey form
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Lichen-effect small black form
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Lichen-effect small black form
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Showing all 8 results

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Everything is dishwasher and microwave safe, except for the handmade cake stands.

All the handmade pottery is made by Linda in her studio in west London. All the manufactured pottery is made to Linda's designs.

Exhibitions

Fresh Air Sculpture
Plates with Purpose, Messums West
Sarah Wiseman Gallery

Open studios

Artists at Home

Past exhibitions

Design Nation Our Journey at The Hub
Oeiras Ceramic Art
On Air at Ceramic Art London
Pathways Art Trail
Stone Lane Sculpture
The Future of Craft

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Royal Albert Hall Café Bar
Scarlet Hotel
The Clove Club

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Masham Gallery
New Ashgate Gallery
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Linda Bloomfield

@lindathepotter

4 hours ago
3 days ago
4 days ago
5 days ago
1 week ago
1 week ago
1 week ago
1 week ago
2 weeks ago

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Pots in the kiln. Not long until my open studio next weekend @artistsathome

#bowls #turquoise #pottery #kilnunloading #ceramics

Pots in the kiln. Not long until my open studio next weekend @artistsathome

#bowls #turquoise #pottery #kilnunloading #ceramics

@lindathepotter

•

Pots in the kiln. Not long until my open studio next weekend @artistsathome #bowls #turquoise #pottery #kilnunloading #ceramics

4 hours ago

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1/9

Next weekend 14-16 June is my open studio, part of @artistsathome in Chiswick and Hammersmith. There are lots of other lovely artists and potters to see nearby. You are welcome to come and visit.

Friday 14 June 6-9pm, Saturday and Sunday 15-16 June 11am - 6pm. Nearest tube Stamford Brook. You can download a studio guide and map from artistsathome.co.uk

#openstudios #artistsathome #openstudios #ceramics #art #pottery #sculpture

@lindathepotter

•

Next weekend 14-16 June is my open studio, part of @artistsathome in Chiswick and Hammersmith. There are lots of other lovely artists and potters to see nearby. You are welcome to come and visit. Friday 14 June 6-9pm, Saturday and Sunday 15-16 June 11am - 6pm. Nearest tube Stamford Brook. You can download a studio guide and map from artistsathome.co.uk #openstudios #artistsathome #openstudios #ceramics #art #pottery #sculpture

3 days ago

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2/9

Testing an ash glaze fired in an electric kiln. I’m using aluminium metal powder as a reduction agent and zinc oxide in the glaze to clear up the unused aluminium, which leaves black specks in the glaze. The green colour is a good indication that the reduction worked. The iron in the wood ash would be yellow brown in oxidation. However, there are still some black specks left in the glaze. It’s also slightly too runny.

Firing in an electric kiln using green energy has a lower carbon footprint than using a gas or wood kiln.

#ashglaze #reduction #electrickiln #greenglaze #woodash

Testing an ash glaze fired in an electric kiln. I’m using aluminium metal powder as a reduction agent and zinc oxide in the glaze to clear up the unused aluminium, which leaves black specks in the glaze. The green colour is a good indication that the reduction worked. The iron in the wood ash would be yellow brown in oxidation. However, there are still some black specks left in the glaze. It’s also slightly too runny.

Firing in an electric kiln using green energy has a lower carbon footprint than using a gas or wood kiln.

#ashglaze #reduction #electrickiln #greenglaze #woodash

Testing an ash glaze fired in an electric kiln. I’m using aluminium metal powder as a reduction agent and zinc oxide in the glaze to clear up the unused aluminium, which leaves black specks in the glaze. The green colour is a good indication that the reduction worked. The iron in the wood ash would be yellow brown in oxidation. However, there are still some black specks left in the glaze. It’s also slightly too runny.

Firing in an electric kiln using green energy has a lower carbon footprint than using a gas or wood kiln.

#ashglaze #reduction #electrickiln #greenglaze #woodash

@lindathepotter

•

Testing an ash glaze fired in an electric kiln. I’m using aluminium metal powder as a reduction agent and zinc oxide in the glaze to clear up the unused aluminium, which leaves black specks in the glaze. The green colour is a good indication that the reduction worked. The iron in the wood ash would be yellow brown in oxidation. However, there are still some black specks left in the glaze. It’s also slightly too runny. Firing in an electric kiln using green energy has a lower carbon footprint than using a gas or wood kiln. #ashglaze #reduction #electrickiln #greenglaze #woodash

4 days ago

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3/9

Various colouring oxides in a strontium crater glaze. From top left base glaze, iron, cobalt, copper, nickel, vanadium and iron. It’s not as bright as the version using barium carbonate.

#lava #craterglaze #strontium #volcanicglaze #glazetests #specialeffectglazes

@lindathepotter

•

Various colouring oxides in a strontium crater glaze. From top left base glaze, iron, cobalt, copper, nickel, vanadium and iron. It’s not as bright as the version using barium carbonate. #lava #craterglaze #strontium #volcanicglaze #glazetests #specialeffectglazes

5 days ago

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4/9

Back in the studio glazing today

#dimpledcups #pottery #porcelain #cups #glazing

@lindathepotter

•

Back in the studio glazing today #dimpledcups #pottery #porcelain #cups #glazing

1 week ago

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5/9

Thank you for all your comments on my last few posts. Sustainability in ceramics is an interesting subject. Some think that process emissions from firing carbonates and high-carbon clays are insignificant, but that’s because they are comparing them to fossil fuels. Coal, oil and gas give off such a HUGE amount of carbon dioxide (and air pollution) that we have changed the entire world’s climate in only 150 years.

In comparison, yes, firing carbonates such as whiting and dolomite does give off a relatively small amount of carbon dioxide, but it’s not insignificant and it’s good to know about it.

This is a graph from The European Ceramic Industry Association’s Roadmap to 2050, published in 2020, aiming to be carbon neutral in just 26 years from now. This may be an impossible dream but it’s a good target to aim for.

The graph shows carbon dioxide emissions in the European ceramics industries from burning fuel for firing (blue), indirectly from electricity (orange) and process emissions from firing carbonates and high-carbon clays (grey). Fuel burning is by far the biggest contributor, with process emissions only a a fifth of this. By 2030, we hope electricity in Europe will be mostly green. By 2050, the ceramics industries in Europe hope to stop burning fossil fuels to fire ceramics. At that point, the process emissions will be the only carbon dioxide emissions left to worry about.

So I do think it’s worth thinking about them now, and thinking more generally about what we can do to make our practices more sustainable. What do you think?

#pottery #ceramics #carbonemissions #processemissions #ceramicsindustry #cerameuni #whiting #dolomite #firing #carbonfootprint #carbonfootprintreduction

Thank you for all your comments on my last few posts. Sustainability in ceramics is an interesting subject. Some think that process emissions from firing carbonates and high-carbon clays are insignificant, but that’s because they are comparing them to fossil fuels. Coal, oil and gas give off such a HUGE amount of carbon dioxide (and air pollution) that we have changed the entire world’s climate in only 150 years.

In comparison, yes, firing carbonates such as whiting and dolomite does give off a relatively small amount of carbon dioxide, but it’s not insignificant and it’s good to know about it.

This is a graph from The European Ceramic Industry Association’s Roadmap to 2050, published in 2020, aiming to be carbon neutral in just 26 years from now. This may be an impossible dream but it’s a good target to aim for.

The graph shows carbon dioxide emissions in the European ceramics industries from burning fuel for firing (blue), indirectly from electricity (orange) and process emissions from firing carbonates and high-carbon clays (grey). Fuel burning is by far the biggest contributor, with process emissions only a a fifth of this. By 2030, we hope electricity in Europe will be mostly green. By 2050, the ceramics industries in Europe hope to stop burning fossil fuels to fire ceramics. At that point, the process emissions will be the only carbon dioxide emissions left to worry about.

So I do think it’s worth thinking about them now, and thinking more generally about what we can do to make our practices more sustainable. What do you think?

#pottery #ceramics #carbonemissions #processemissions #ceramicsindustry #cerameuni #whiting #dolomite #firing #carbonfootprint #carbonfootprintreduction

@lindathepotter

•

Thank you for all your comments on my last few posts. Sustainability in ceramics is an interesting subject. Some think that process emissions from firing carbonates and high-carbon clays are insignificant, but that’s because they are comparing them to fossil fuels. Coal, oil and gas give off such a HUGE amount of carbon dioxide (and air pollution) that we have changed the entire world’s climate in only 150 years. In comparison, yes, firing carbonates such as whiting and dolomite does give off a relatively small amount of carbon dioxide, but it’s not insignificant and it’s good to know about it. This is a graph from The European Ceramic Industry Association’s Roadmap to 2050, published in 2020, aiming to be carbon neutral in just 26 years from now. This may be an impossible dream but it’s a good target to aim for. The graph shows carbon dioxide emissions in the European ceramics industries from burning fuel for firing (blue), indirectly from electricity (orange) and process emissions from firing carbonates and high-carbon clays (grey). Fuel burning is by far the biggest contributor, with process emissions only a a fifth of this. By 2030, we hope electricity in Europe will be mostly green. By 2050, the ceramics industries in Europe hope to stop burning fossil fuels to fire ceramics. At that point, the process emissions will be the only carbon dioxide emissions left to worry about. So I do think it’s worth thinking about them now, and thinking more generally about what we can do to make our practices more sustainable. What do you think? #pottery #ceramics #carbonemissions #processemissions #ceramicsindustry #cerameuni #whiting #dolomite #firing #carbonfootprint #carbonfootprintreduction

1 week ago

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6/9

What can potters do to reduce their carbon dioxide emissions?

This is a wood ash glaze, made from wood ash and feldspar (you could also add clay), with a tiny bit of aluminium powder for reduction, fired in an electric kiln using a green energy provider.

Wood ash is high in calcium, already comes in powder form and is easier to process than seashells or egg shells. Wood ash also contains other flux oxides needed to make a glaze: potassium, magnesium and silica. It makes a runny glaze all by itself. Burning wood does release carbon dioxide and can cause air pollution, but could be seen as part of the natural carbon cycle (the tree would have rotted and eventually released its carbon over time). This is better than mining and transporting 100 million year old chalk and releasing its carbon dioxide by firing it (similar to burning 300 million year old fossil fuels).

It’s good to use waste materials such as wood ash, and locally found materials such as clay from a building site or river bank. It’s also a good idea to recycle and reuse your own clay and waste glaze and use recycled packing materials (thank you to my family who are always giving me boxes).

Shipping is also a large part of our carbon footprint. I’m lucky to live in London with many of my clients nearby. I once even delivered some work across London by bicycle. What we really need is a green shipping company. Does anyone know of one @blue_patch @craftscouncil @design_nationuk ?

#pottery #sustainablepottery #carbonfootprint #emissions #firing #ceramics #greenshipping #sustainableceramics

@lindathepotter

•

What can potters do to reduce their carbon dioxide emissions? This is a wood ash glaze, made from wood ash and feldspar (you could also add clay), with a tiny bit of aluminium powder for reduction, fired in an electric kiln using a green energy provider. Wood ash is high in calcium, already comes in powder form and is easier to process than seashells or egg shells. Wood ash also contains other flux oxides needed to make a glaze: potassium, magnesium and silica. It makes a runny glaze all by itself. Burning wood does release carbon dioxide and can cause air pollution, but could be seen as part of the natural carbon cycle (the tree would have rotted and eventually released its carbon over time). This is better than mining and transporting 100 million year old chalk and releasing its carbon dioxide by firing it (similar to burning 300 million year old fossil fuels). It’s good to use waste materials such as wood ash, and locally found materials such as clay from a building site or river bank. It’s also a good idea to recycle and reuse your own clay and waste glaze and use recycled packing materials (thank you to my family who are always giving me boxes). Shipping is also a large part of our carbon footprint. I’m lucky to live in London with many of my clients nearby. I once even delivered some work across London by bicycle. What we really need is a green shipping company. Does anyone know of one @blue_patch @craftscouncil @design_nationuk ? #pottery #sustainablepottery #carbonfootprint #emissions #firing #ceramics #greenshipping #sustainableceramics

1 week ago

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7/9

The carbon dioxide emissions from firing carbonates and carbon-rich clays are called Process emissions. In the cement/concrete industry they account for 65% of the emissions (the rest comes from fuel combustion for firing and electricity). In the ceramics industry (including brick and tile), they account for up to 30% of emissions, so are smaller but not insignificant.

So what can we do to avoid firing carbonates such as whiting and dolomite? We could replace them with silicates. Wollastonite is calcium silicate and supplies both calcium and silica to the glaze. You would need to reformulate the glaze on Glazy.org and remove some of the quartz or flint from your recipe to get the same chemical formula as the original glaze.

But unfortunately it’s not that simple. In the UK we have plentiful chalk and limestone but not wollastonite, so that has to be shipped from Finland, causing more carbon emissions and a price increase; wollastonite is almost double the price of whiting in the UK. So you would increase your carbon footprint by switching from whiting to wollastonite. If you live near a wollastonite mine, as in eastern USA and Canada, it would be a good idea to use that. You can tell by looking at the prices, if wollastonite is cheap, then it hasn’t been shipped far. If whiting is cheaper, then use that.

In the case of dolomite, you can use talc instead. Dolomite is made of calcium magnesium carbonate, while talc is magnesium silicate, so you would have to reformulate the glaze by adding calcium and reducing the silica in the glaze. Talc comes from France, so not too far to ship to the UK. However, there have been some issues with talc sources recently and it is also found in mines together with asbestos, so always wear a respirator when using it in the powdered form.

As for the other carbonates, there is not a good alternative for barium or strontium carbonate, as the sulphates give off toxic sulphur dioxide during firing.

Instead of lithium carbonate, you could use spodumene, but you would need five times as much. Owing to the price increase of lithium, it might be better to leave it out or substitute another flux such as zinc oxide.

@lindathepotter

•

The carbon dioxide emissions from firing carbonates and carbon-rich clays are called Process emissions. In the cement/concrete industry they account for 65% of the emissions (the rest comes from fuel combustion for firing and electricity). In the ceramics industry (including brick and tile), they account for up to 30% of emissions, so are smaller but not insignificant. So what can we do to avoid firing carbonates such as whiting and dolomite? We could replace them with silicates. Wollastonite is calcium silicate and supplies both calcium and silica to the glaze. You would need to reformulate the glaze on Glazy.org and remove some of the quartz or flint from your recipe to get the same chemical formula as the original glaze. But unfortunately it’s not that simple. In the UK we have plentiful chalk and limestone but not wollastonite, so that has to be shipped from Finland, causing more carbon emissions and a price increase; wollastonite is almost double the price of whiting in the UK. So you would increase your carbon footprint by switching from whiting to wollastonite. If you live near a wollastonite mine, as in eastern USA and Canada, it would be a good idea to use that. You can tell by looking at the prices, if wollastonite is cheap, then it hasn’t been shipped far. If whiting is cheaper, then use that. In the case of dolomite, you can use talc instead. Dolomite is made of calcium magnesium carbonate, while talc is magnesium silicate, so you would have to reformulate the glaze by adding calcium and reducing the silica in the glaze. Talc comes from France, so not too far to ship to the UK. However, there have been some issues with talc sources recently and it is also found in mines together with asbestos, so always wear a respirator when using it in the powdered form. As for the other carbonates, there is not a good alternative for barium or strontium carbonate, as the sulphates give off toxic sulphur dioxide during firing. Instead of lithium carbonate, you could use spodumene, but you would need five times as much. Owing to the price increase of lithium, it might be better to leave it out or substitute another flux such as zinc oxide.

1 week ago

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8/9

This is clunch, a mixture of chalk and clay, on Salisbury Plain in Wiltshire, and Black Ven, the Blue Lias limestone and shale/clay cliff in Lyme Regis where Mary Anning found her fossils.

Chalk and limestone both contain calcium carbonate, used to make concrete and also in ceramic glazes. When you fire calcium carbonate to high temperatures, it gives off carbon dioxide gas, the cause of global warming. The cement/concrete industry is a huge contributor to carbon dioxide emissions but it has just struck me that we are doing the same when we use whiting in our glazes in ceramics, though on a much smaller scale.

Whiting, chalk, or calcium carbonate is a cheap, useful flux in glazes. It makes the glaze chemically stable and durable. Usually it contributes around a fifth of the glaze by weight. But whiting is not the only carbonate we use in glazes. Other carbonates include dolomite, magnesium carbonate, barium carbonate, strontium carbonate, lithium carbonate and soda ash. There are also carbonate forms of the colouring oxides: copper carbonate, cobalt carbonate, manganese carbonate and nickel carbonate. We only use these in small amounts but they do contribute to carbon emissions. I probably get through around 20kg of whiting a year, which produces 8.8kg carbon dioxide, which is small compared to the total carbon footprint of each mug (around 2kg) but worth thinking about.

#clunch #limestone #whiting #chalk #calciumcarbonate #carbonemissions #carbonfootprint

This is clunch, a mixture of chalk and clay, on Salisbury Plain in Wiltshire, and Black Ven, the Blue Lias limestone and shale/clay cliff in Lyme Regis where Mary Anning found her fossils.

Chalk and limestone both contain calcium carbonate, used to make concrete and also in ceramic glazes. When you fire calcium carbonate to high temperatures, it gives off carbon dioxide gas, the cause of global warming. The cement/concrete industry is a huge contributor to carbon dioxide emissions but it has just struck me that we are doing the same when we use whiting in our glazes in ceramics, though on a much smaller scale.

Whiting, chalk, or calcium carbonate is a cheap, useful flux in glazes. It makes the glaze chemically stable and durable. Usually it contributes around a fifth of the glaze by weight. But whiting is not the only carbonate we use in glazes. Other carbonates include dolomite, magnesium carbonate, barium carbonate, strontium carbonate, lithium carbonate and soda ash. There are also carbonate forms of the colouring oxides: copper carbonate, cobalt carbonate, manganese carbonate and nickel carbonate. We only use these in small amounts but they do contribute to carbon emissions. I probably get through around 20kg of whiting a year, which produces 8.8kg carbon dioxide, which is small compared to the total carbon footprint of each mug (around 2kg) but worth thinking about.

#clunch #limestone #whiting #chalk #calciumcarbonate #carbonemissions #carbonfootprint

@lindathepotter

•

This is clunch, a mixture of chalk and clay, on Salisbury Plain in Wiltshire, and Black Ven, the Blue Lias limestone and shale/clay cliff in Lyme Regis where Mary Anning found her fossils. Chalk and limestone both contain calcium carbonate, used to make concrete and also in ceramic glazes. When you fire calcium carbonate to high temperatures, it gives off carbon dioxide gas, the cause of global warming. The cement/concrete industry is a huge contributor to carbon dioxide emissions but it has just struck me that we are doing the same when we use whiting in our glazes in ceramics, though on a much smaller scale. Whiting, chalk, or calcium carbonate is a cheap, useful flux in glazes. It makes the glaze chemically stable and durable. Usually it contributes around a fifth of the glaze by weight. But whiting is not the only carbonate we use in glazes. Other carbonates include dolomite, magnesium carbonate, barium carbonate, strontium carbonate, lithium carbonate and soda ash. There are also carbonate forms of the colouring oxides: copper carbonate, cobalt carbonate, manganese carbonate and nickel carbonate. We only use these in small amounts but they do contribute to carbon emissions. I probably get through around 20kg of whiting a year, which produces 8.8kg carbon dioxide, which is small compared to the total carbon footprint of each mug (around 2kg) but worth thinking about. #clunch #limestone #whiting #chalk #calciumcarbonate #carbonemissions #carbonfootprint

2 weeks ago

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9/9

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