Oxford Clay

Katherine Tomlinson

Chats about pottery with an environmental focus. Tune in for pottery tips and a discussion of issues in the handmade pottery industry today. Oxford Clay creates resources for Potters seeking a more environmentally friendly pottery practice.

Oxford Clay website: www.oxfordclay.co.uk

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125 episodes
Updated July 26

Episodes125

Newest first

Oct 12, 2025 · 11 min
105. How to Create a Flat Base and Maker's Mark in Pottery
In this episode, I tell you about an easy way to create a perfectly flat base (or rim!) for your pottery using just a tea towel, a flat surface and some water. We also talk about maker’s marks in pottery and the importance of these in claiming your beautiful pottery and your creativity! All these episodes can be viewed as videos in the ‘How to Make a Raw-Glazed Mug on the Potter’s Wheel’ YouTube playlist here. Watch the video version of this episode on YouTube ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Oct 5, 2025 · 20 min
104. How to Attach a Mug Handle in Pottery
Attaching a handle is a critical step in making a mug because if the handle cracks off when drying, it's very challenging (some might say impossible!) to re-attach. Join me for this episode, where I attach the handle we made in episode 102 to the mug. I'll talk you through just how to attach a mug handle without the dreaded cracking! All these episodes can be viewed as videos in the ‘How to Make a Raw-Glazed Mug on the Potter’s Wheel’ YouTube playlist here. Watch the video version of this episode on YouTube ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Sep 28, 2025 · 25 min
103. How to Turn or Trim the Base of a Pot
Turning (also known as trimming) the base of a pot involves turning the pot upside down on the pottery wheel and carving a foot with a turning tool (or tools!). Turning / trimming is a great way to create a beautiful finish to the base of a pot. Join me for this episode where I turn the base of the mug and talk you through exactly how I’m doing it! All these episodes can be viewed as videos in the ‘How to Make a Raw-Glazed Mug on the Potter’s Wheel’ YouTube playlist here. Watch the video version of this episode on YouTube ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Sep 21, 2025 · 14 min
102. How to Pull a Handle in Pottery
If you’ve ever wondered how to ‘pull’ a handle in pottery, this episode is for you! Welcome to the third episode of the How to Make a Raw-Glazed Mug on the Potter’s Wheel series, where we’ll be talking about how to ‘pull’ handles. I talk through the things I think about when pulling handles, and we’ll pull two handles live on this episode. ✨ The importance of wedging (also known as kneading) the clay really well before pulling a handle. ✨ How much clay to use for pulling a handle (not too much). ✨ The importance of using lots (& lots) of water when pulling handles. ✨ The importance of making a few handles, even if you only need one, in case one goes wrong. All these episodes can be viewed as videos in the ‘How to Make a Raw-Glazed Mug on the Potter’s Wheel’ YouTube playlist here. Watch the video version of this episode on YouTube ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Sep 14, 2025 · 33 min
101. How to Make a Mug on the Potter's Wheel
Welcome to the second episode of the How to Make a Raw-Glazed Mug on the Potter’s Wheel series! In this episode, we’ll actually be making our mug on the Potter’s wheel! I talk you through the different stages of making a pot on the potter’s wheel and the different speeds the wheel needs to go at for each stage. We’ll also cover the importance of using water and anchoring your arms when making pottery on the potter’s wheel. The stages of making a pot on the potter’s wheel: ✨ Fixing the clay on the potters wheel (maximum wheel speed). ✨ Centreing the clay (maximum wheel speed). ✨ Opening the clay out to start to make the pot (medium wheel speed). ✨ Bringing the pot up to make a cylinder, making sure the walls of the pot are an even thickness all the way up (slow wheel speed). ✨ Shaping the pot (slow wheel speed). ✨ Finishing the rim of the pot to make it nicely shaped and smoothed (very slow wheel speed). ✨ Cutting the pot off the potter's wheel (wheel is still). ✨ Cleaning the wheel after use to prevent clay dust. All these episodes can be viewed as videos in the ‘How to Make a Raw-Glazed Mug on the Potter’s Wheel’ YouTube playlist here. Watch the video version of this episode on YouTube ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Sep 7, 2025 · 16 min
100. How to Prepare to Make a Pot on the Potter's Wheel
Welcome to the first episode of the How to Make a Raw-Glazed Mug on the Potter’s Wheel series! In this episode, I’ll talk you through the things I think about to prepare to make a pot on the electric potter’s wheel, such as: ✨The size of pot to make. ✨The type of clay to use. ✨The importance of wedging (also known as kneading) the clay before making anything on the potter’s wheel. ✨How much clay to use to make the pot. ✨Shaping the clay into a ball before starting to make the pot. ✨Having a bucket of water and a tea towel handy to clean your hands when you need to. All these episodes can be viewed as videos in the ‘How to Make a Raw-Glazed Mug on the Potter’s Wheel’ YouTube playlist here. Watch the video version of this episode on YouTube ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Aug 31, 2025 · 6 min
99. Introducing How to Make a Raw-Glazed Mug on the Potter’s Wheel
To celebrate 100 episodes of the Oxford Clay Pottery Podcast, I’ve created a special series on making a raw-glazed mug, hand-thrown on the potter’s wheel! Raw glazing is where a pot is fired in a glaze firing without being bisque-fired first. Join me for 10 episodes in this series covering each part of the raw-glazed mug-making process: ✨ 1. How to Prepare to Make a Pot on the Potter's Wheel (Podcast episode 100). ✨ 2. How to Make a Mug on the Potter's Wheel (Podcast episode 101). ✨ 3. How to Pull a Handle in Pottery (Podcast episode 102). ✨ 4. How to Turn or Trim the Base of a Pot (Podcast episode 103). ✨ 5. How to Attach a Mug Handle in Pottery (Podcast episode 104). ✨ 6. How to Create a Flat Base and Maker's Mark in Pottery (Podcast episode 105). ✨ 7. How to Make a Pottery Glaze for Raw Glazing (Podcast episode 106). ✨ 8. How to Raw Glaze Pottery (Podcast episode 107). ✨ 9. How to Load an Electric Pottery Kiln (Podcast episode 108). ✨ 10. How to Fire an Electric Kiln (Podcast episode 109). All these episodes can be viewed as videos in the ‘How to Make a Raw-Glazed Mug on the Potter’s Wheel’ YouTube playlist here. Watch the video version of this episode on YouTube ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Aug 24, 2025 · 17 min
98. How to Write Words and Letters in Pottery
You might want to write on your pottery as part of the design, to create your maker's mark or to write a dedication to someone who will receive your pot as a gift. However, I’ve always found writing letters and words in pottery really tricky! In this episode, I tell you about 6 ways I’ve tried to write letters and words in pottery with varying success! ✔️Etching handwriting into clay at the leather hard stage using a pen or pencil. ✔️ Painting lettering with glaze or oxides. ✔️ Creating 3D letter sprigs in clay with silicone sugar crafting moulds. ✔️ Slip trailing lettering, bisque firing and glazing with a transparent glaze. ✔️ Pressing lettering into leather-hard clay using metal letter stamps. ✔️ Getting a bespoke lettering stamp made from 3D printed plastic. Watch the video version of this episode on YouTube ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Aug 10, 2025 · 19 min
97. What is Rutile in Pottery and What are the Alternatives
Rutile is a form of Titanium ore with Iron deposits and is used in pottery to create brown, orange and yellow colours in pottery glazes. Rutile is also used to create beautiful speckled effects in glazes. However, there are some issues with the global Rutile mining industry, such as high energy consumption and the displacement of people from land, in order to mine Rutile. If you didn’t want to use Rutile in your pottery, there are alternatives to using Rutile in glazes! Plant ashes (particularly ash from fallen leaves), for example, often create rutile-looking pottery glazes. Here are 4 of my favourite eco-conscious Rutile-like pottery glaze recipes. All the recipes in this episode are from the book: eBook Eco-conscious Pottery Colour — Oxford Clay Handmade Ceramics ✨Recipe 6 from ‘Eco-Conscious Pottery Colour’ 40 parts - Cornish Stone 40 parts - Indian bean tree leaf ash (from naturally fallen leaves in the Autumn) 20 parts - Quartz rock ✨Recipe 63 from ‘Eco-Conscious Pottery Colour’ 40 parts - Cornish Stone 40 parts - Rhubarb leaf ash (naturally died back in the Autumn) 20 parts - Quartz rock ✨Recipe 64 from ‘Eco-Conscious Pottery Colour’ 40 parts - Cornish Stone 40 parts - Rose bush leaf ash (from naturally fallen leaves in the Autumn) 20 parts - Quartz rock +1% - Hymod Ball Clay +1% - Red Clay +0.2% - Verdigris ✨Recipe 78 from ‘Eco-Conscious Pottery Colour’ 40 parts - Cornish Stone 40 parts - Fig tree leaf ash (from naturally fallen leaves in the Autumn) 20 parts - Quartz rock + 3% - Verdigris The journal articles referred to in this episode are: Farjana, S. H. et al. (2018) Towards sustainable TiO2 production: An investigation of environmental impacts of ilmenite and rutile processing routes in Australia. Journal of cleaner production, 2018-09, Vol.196, p.1016-1025. Sigismond A. Wilson (2019) Mining-induced displacement and resettlement: The case of rutile mining communities in Sierra Leone. Journal of sustainable mining, 2019-05, Vol.18 (2), p.67-76. Watch the video version of this episode on YouTube ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Jul 27, 2025 · 20 min
96. 5 Surprising Sources of Inspiration for Pottery
Being inspired in pottery can happen anywhere, at any time! In this episode, I talk about 5 surprising sources of inspiration for making pottery that I’ve experienced as a Potter: 💡 - Archaeology books - depicting the shapes and surface decoration of ancient pottery. 💡 - Books for collectors of pottery - (or glass!) about a specific pottery industry. 💡 - Food packaging - which often has beautifully designed and functional shapes. 💡 - Cookware - such as casserole dishes, saucepans and enamel pie dishes. 💡 - Charity shops - often have beautiful pieces of pottery from many different eras that can be picked up cheaply for inspiration. Watch the video version of this episode on YouTube ———————————————- ✨Support the Podcast Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Jul 13, 2025 · 12 min
95. How to Make Holes in Clay
Making neat holes in pottery can be really tricky! In this episode, I talk about the importance of making holes in your pottery at the leather hard stage and tell you about my favourite way of making neat holes in pottery - with a drill bit! You can watch the video version of this episode on YouTube. ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Jun 29, 2025 · 22 min
94. Simple Ways to Fix Imperfections in Fired Pottery
Imperfections are a natural part of pottery, and many of these only manifest after a pot has been either bisque or glaze fired. But you don’t need to throw a pot away just because of a minor imperfection! In this episode, I talk about four very common imperfections in fired pottery and simple ways to fix them: ✔️Hairline cracks appearing in pieces of pottery after the bisque firing, in pieces of pottery that have been joined together ✔️A rough surface after a pot has been glaze-fired, created by a too-thin layer of ash glaze, e.g on the rim of a mug. ✔️A rough surface on the base of a pot caused by tiny pieces of kiln shelf sticking to it after the glaze firing. ✔️Bubbles in a glaze that become sharp once a pot has cooled after being glaze-fired. You can watch the video version of this episode on YouTube. ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Jun 15, 2025 · 2 min
93. How to Make a Pottery Glaze From Grape Stalks
I’ve got very interested recently in making pottery glazes from things that would normally be thrown away. In this episode, I tell you about a stoneware pottery glaze that I’ve made from grape stalks collected over six months from bunches of grapes bought at the supermarket! You can watch the video version of this episode on YouTube. ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Jun 1, 2025 · 19 min
92. Can you Colour Clay Using Verdigris?
Some potters create coloured pottery by mixing oxides and stains into the clay itself before firing. A technique that uses this is called agate, where different coloured clays are combined in layers and mixed, to create a design. Recently, I’ve been wondering whether this would work with the home-made pigment verdigris created from recycled copper. In this episode, I talk about some experiments I’ve done adding verdigris to clay at a ratio of 3% and 5% dry powdered verdigris to wet clay. You can watch the video version of this episode on YouTube. ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
May 18, 2025 · 2 min
91. How to Recycle Waste Incense Stick Ash Into a Stoneware Pottery Glaze
In this mini episode of the podcast I tell you about a beautiful greeny-brown coloured stoneware pottery glaze I’ve made with ash recycled from incense sticks. Rather than throwing the incense ash away after burning, it can be collected and recycled into a pottery glaze coloured only by the natural trace metals in the ash! The stoneware pottery glaze recipe used in this episode is: 40 parts - Sieved Incense Ash (sieved with a 100 mesh size sieve) 40 parts - Cornish Stone 20 parts - Quartz You can watch the video version of this episode on YouTube. ✨Support the Podcast ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
May 11, 2025 · 15 min
90. 3 Simple Ways to Experiment in a Pottery Class✨
In a pottery class you might have a defined project to work on, but you can still experiment lots! In this episode, I talk about three ways to simply and easily experiment with surface decoration in a pottery class by; ✨ - Pressing an object into the surface of the clay ✨ - Making a bespoke tool to create a specific mark in your pottery, for example, fish scales! ✨ - Leaving areas of your pottery un-glazed to create interesting colours and surfaces. The workshop that inspired this episode was run by Ruth Harris at Catkin Tree Studio. You can view workshops here: https://www.catkintreestudio.co.uk/events/workshops/ You can watch the video version of this episode on YouTube. ✨Support the Podcast: https://www.oxfordclay.co.uk/support ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
May 4, 2025 · 24 min
89. 13 Amazing Reasons to Make a Pottery Glaze from Fallen Leaves.
It's Spring in the UK, and this is an ideal time to identify deciduous trees that will drop their leaves in the Autumn. Or perhaps you live in the southern hemisphere, where deciduous trees are doing this right now! Did you know that any plant material can be burned into ash and made into a pottery glaze! Leaves are no exception to this, and many beautiful pottery glazes can be made with leaves that fall naturally as part of a plant’s growing cycle. As Potters, we can collect these leaves, create ash from them and make them into a pottery glaze. The episodes referred to in this episode about how to make a pottery glaze from leaf ash are here: 🍂70. How to Make a Pottery Glaze with Fallen Leaf Ash - Creating the Leaf Ash 🍂71. How to Make a Pottery Glaze from Fallen Leaves - Making the Glaze In this episode, I talk about 13 amazing reasons to make a pottery glaze from fallen leaves. 🍂 - Connects you to an ancient pottery tradition. 🍂 - Ash glaze recipes are often very simple and easy to make. 🍂 - Leaf ash creates many unique and special-looking pottery glazes. 🍂 - Leaf ash glazes work really well with colouring oxides. 🍂 - Fallen leaves are free and abundantly available. 🍂 - Leaf ash can be locally sourced. 🍂 - Leaf ash made from fallen leaves is a renewable glaze-making ingredient. 🍂 - Using ash reduces a Potter’s reliance on mined pottery materials. 🍂 - Fallen leaves create more ash for glazing than wood does. 🍂 - Using fallen leaves stops trees from being felled for ash. 🍂 - Leaf ash glazes are naturally coloured with trace metals in the ash. 🍂 - Foraging for leaves in nature is good for your well-being. 🍂 - Foraging is a natural activity for humans. The pottery glaze recipe for a stoneware leaf ash glaze is: 40 parts - Sieved Leaf Ash 40 parts - Cornish Stone 20 parts - Quartz You can watch the video version of this episode on YouTube. ✨Support the Podcast: https://www.oxfordclay.co.uk/support ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Apr 27, 2025 · 16 min
88: How to Support Your Joy as a Potter
Doing pottery brings so much joy! Join me for this episode of the podcast where I talk about some mental re-frames that can support your joy as a Potter even more! 🌈 - The importance of enjoying making pottery in the present moment 🌈 - Seeing ‘failure’ as an opportunity for learning 🌈 - The importance of not judging your early work and instead celebrating the evolution of your pottery skills. 🌈 - Allowing yourself to play and experiment in your pottery and how this can inspire your creativity. 🌈 - The importance of following your curiosity and the things you enjoy learning about. 🌈 - Allowing yourself to make things your way, however that feels right for you in your own body. 🌈 - How the pottery learning journey isn't linear, and that's ok - you're doing it right! You can watch the video version of this episode on YouTube. ✨Support the Podcast: https://www.oxfordclay.co.uk/support ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Apr 13, 2025 · 14 min
87: How to Make Perfectly Flat Pottery
Flat rolled out clay has a very annoying tendency to curl up as it dries! In this episode I talk about the three things I do in my pottery to make ‘perfectly’ flat (although nothing in pottery is ever perfect!) drinks coasters. ✔️ Wedging (or kneading) the clay very well before making anything. ✔️ Rolling the clay out at an even thickness using rolling guides. ✔️ The importance of gently compressing the wet clay as it dries. You can watch the video version of this episode on YouTube. ✨Support the Podcast: https://www.oxfordclay.co.uk/support ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------
Apr 6, 2025 · 15 min
86: Can You Use a Silicone Mould in Pottery?
Yes you can! In fact they are an amazing way to add beautiful decorative details to pottery. Silicone sugar craft moulds from cake making can be used by Potters who want to create intricate surface decorations for their pots. Clay is simply pressed into the mould, left to dry a little, removed from the mould and then attached to pottery as a sprig decoration. I use silicone moulds in my pottery to make dragonfly, butterfly and bird decorations that I then attach onto my pottery with slip. In this episode, I share with you 5 tips I’ve learned when using silicone sugarcraft moulds in pottery: ✨Dust a little cornflour into the mould before using it to help the clay sprig decoration release from the mould. ✨Add a little paper pulp to the clay you’re using to press into your mould. Paper makes clay super strong and prevents the clay sprig decoration from breaking when being removed from the mould. ✨Use vinegar (applied to the main body of the pot), and slip to attach the decoration to the pot. ✨Dry your pottery slowly in a plastic storage box to prevent the sprig decoration from cracking off the pot. ✨Press out your designs from the mould onto a folded cloth or tea towel so the clay decorations are not damaged as they are removed from the mould. You can watch the video version of this episode on YouTube. ✨Support the Podcast: https://www.oxfordclay.co.uk/support ------------------------------- Resources for Potters: ⭐ Pottery Paperback Books available from Amazon Free Pottery Guides: 🆓 Download the Free How to Make a Pottery Glaze Workbook (suitable for beginners): 🆓 Download the Free How to programme an Electric Kiln for bisque and stoneware glaze firings (includes full kiln firing schedule) ------------------------------------