Proportion and Design: Why Some Shapes Just Feel Right
Why do some bowls feel balanced and others feel awkward? Why does one curve satisfy while another unsettles? These questions have occupied me for years, and they became the foundation of my book "Woodturning: Form and Formula."
The answer, it turns out, involves mathematics but not the super complex intimidating kind. The Golden Ratio, the Rule of Thirds, Fibonacci sequences aren't arbitrary academic concepts. They're descriptions of patterns that appear throughout nature and that humans find inherently pleasing. A bowl whose proportions follow these principles often "feels right" even to people who couldn't explain why.
But here's what I want to emphasise: these aren't rules. They're starting points for understanding.
When I teach design at The Woodturning School, I begin with the principles but quickly move to exceptions. The Golden Ratio suggests certain proportions, but deliberate deviation from it can create tension that makes a piece more interesting. The Rule of Thirds provides a framework, but sometimes centring is exactly right. Understanding the guidelines gives you the vocabulary to make informed choices – including the choice to break them.
What I've found is that turners who understand proportion make better work even when they're not consciously applying formulas. The principles become internalised. You develop an eye for balance that operates intuitively, informed by knowledge but not constrained by it.
The reverse is also true: understanding why a piece feels wrong helps you fix it. Is the foot too small relative to the rim? Is the curve's inflection point in an awkward position? Is the height-to-width ratio creating unintended tension? These diagnostic questions have answers rooted in proportion.
Design isn't mystical talent that some people have and others don't. It's a learnable skill with principles that can be studied, practiced, and applied. The lathe is a wonderful tool for this learning because feedback is immediate – you can see whether a proportion works within seconds of cutting it.
“What makes your favourite piece feel right?”
Class Recommendation: Design principles are woven into all our classes, but Bowl Improvers focuses specifically on developing your eye for proportion.