Glazes and Firing: Color, Temperatures, Defects (with AI Defect Diagnosis) — PickAClass
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⏱ 3h 2m 📚 30 lessons 🎧 Audio version

Glazes and Firing: Color, Temperatures, Defects (with AI Defect Diagnosis)

Bubbles, Crazing, Running: Why They Happen and How to Avoid Them

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About this course

This course explores the dynamics of ceramic glazes, focusing on color, firing temperatures, and common defects such as bubbles, crazing, and running. It is designed for ceramicists, hobbyists, and anyone wishing to deepen their understanding of glazes and improve their results. Through theoretical and practical modules, you will learn to identify the causes of defects and prevent them. We will integrate an artificial intelligence tool that analyzes photos of your glazed pieces to suggest possible causes for detected defects.

Course contents

6 modules · 30 lessons · 3h 2m

1 Introduction to the World of Glazes
Understand the fundamental basics of ceramic glazes and safety. 5 lessons · 30 min
  1. Welcome to the Studio
    Course overview and learning objectives.    6 min
  2. What is a Glaze?
    Definition of glaze as a glassy coating and its basic components.    6 min
  3. Application Methods
    Differences between dipping, brushing, and spraying.    6 min
  4. Safety and Materials
    Using masks and managing toxic dust.    6 min
  5. The Ceramics Cycle
    From raw clay to the finished piece: where glazing fits in.    6 min
2 Color and Heat
Learn how temperature influences glaze color and stability. 5 lessons · 31 min
  1. The Chemistry of Color
    How metal oxides create colors during firing.    6 min
  2. Low vs. High Temperature
    Differences between 980°C and 1250°C glazes.    7 min
  3. Pyrometric Cones
    Why the display temperature isn't everything.    6 min
  4. Oxidation and Reduction
    How the kiln atmosphere radically changes the final result.    6 min
  5. Reading Labels
    Interpreting technical data on commercial glaze jars.    6 min
3 Common Defects: Bubbles and Crazing
Analyze the first two major enemies of glazing. 5 lessons · 31 min
  1. Why Do Defects Occur?
    Introduction to diagnostics: human error vs. chemical error.    6 min
  2. Bubbles and Craters
    Identifying signs of gases trapped in the glaze.    6 min
  3. Solving Bubbles
    Slow firing techniques and cleaning the substrate.    6 min
  4. Crazing
    Understanding why glaze cracks like a spider web.    6 min
  5. Clay and Glaze Fit
    The concept of the coefficient of thermal expansion explained simply.    7 min
4 Common Defects: Running and Crawling
Manage glaze fluidity and adhesion issues. 5 lessons · 30 min
  1. Running: When Glaze Slips
    Causes of excessive fluidity during firing.    6 min
  2. Thickness Matters
    How an application that is too heavy causes runs and defects.    6 min
  3. Crawling
    Why glaze pulls away, leaving areas of bare clay.    6 min
  4. Pinholes
    Small holes on the surface: causes and remedies.    6 min
  5. Shivering
    When glaze flakes off the edges because it is too compressed.    6 min
5 Prevention and Care
Adopt best practices to minimize errors before firing. 5 lessons · 30 min
  1. Cleaning and Preparation
    Removing dust and grease before glazing.    6 min
  2. The Cooling Curve
    The importance of not opening the kiln too early.    6 min
  3. The Firing Log
    How to document every test to avoid repeating mistakes.    6 min
  4. Introduction to Ceramic AI
    What the AI tool is and how it can help us.    6 min
  5. Photography for Diagnosis
    How to take clear macro photos for AI analysis.    6 min
6 AI Diagnosis and Solutions
Use technology to solve real problems on your own pieces. 5 lessons · 30 min
  1. Uploading and Analysis
    Using AI to identify a defect from a real photo.    7 min
  2. Interpreting Suggestions
    Evaluating the causes suggested by the AI (temperature, thickness, etc.).    6 min
  3. Correction Tests
    Applying the suggested solution to a new test piece.    7 min
  4. Kiln Maintenance
    Checking heating elements for even firings.    5 min
  5. Conclusion and Community
    Course summary and how to continue learning.    5 min
Final project

The Ceramics Doctor

Choose a piece with a glazing defect. Document it with photos, analyze it using the course's AI, and write a brief action plan to correct the defect in the next firing.

What you'll get

  • 📜 Certificate of completion
    Add it to your LinkedIn profile
  • 💬 Personal AI tutor
    Stuck on a lesson? Ask your built-in tutor anything, any time.
  • 🎧 Audio version included
    Learn on the go — no screen needed
  • ♾️ Lifetime access
    Come back anytime, no expiry
  • 📱 Phone or computer
    Works anywhere, any device
  • 💸 14-day refund
    No questions asked
  • ⚡ Short & focused
    3h 2m of practical content

Certificate of completion

Every course you complete on PickAClass issues a credential like this — original, with its own code, verifiable by URL, and detailed about what was actually demonstrated.

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Certificate of Mastery
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has successfully demonstrated mastery of
Glazes and Firing: Color, Temperatures, Defects (with AI Defect Diagnosis)
Skills demonstrated
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Behavioral pattern analysis
Foundational
1.2 hrs
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Decision-architecture frameworks
Proficient
1.4 hrs
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A/B test design
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1.7 hrs
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1.9 hrs
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Glazes and Firing: Color, Temperatures, Defects (with AI Defect Diagnosis)
Page 2 of 2
Performance detail
Coursework summary
Lessons completed 14 / 14
Practice questions 26 / 28
Assignments submitted 4 (avg 4.5 / 5)
Capstone project Reviewed — 4.6 / 5
Total practice 6.2 hrs
Performance benchmark
Cohort rank Top 12% of 1,625
Time to completion 11 days (median: 22)
Mastery score 91 / 100
Practice-question score 94%
Skill verification Verified Skill Path
Verify this credential
pickaclass.com/certificates/PCC-2026-X4F7-AP19
Issued under the academic standards of PickAClass. Skill levels reflect assessed performance against the course's competency rubric. This is an original credential of this platform.

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Frequently asked

What do I need to take this course? +

Just a phone or computer with internet. No installs, no special hardware.

How do I pay? +

By card via Stripe. We don’t store card details — Stripe handles them securely.

Can I get a refund? +

Yes — full refund within 14 days, no questions asked.

How long will I have access? +

Forever. Once you purchase, the course is yours to revisit anytime.

Will I get a certificate? +

Yes. On completion you'll receive a certificate you can add to your LinkedIn profile.

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