Ashburton And Buckfastleigh Health and Well Being Centre -Capturing Place in Glass: The Design Process Behind ‘Diamond River’

Amy Whittingham • July 29, 2025

The Design Process behind 'Diamond River'

The design process takes quite a few forms, I did a lot of drawing, sketches, rough notes, and even paintings as I was developing my ideas. I knew that I wanted to capture the textures of the town, to celebrate the river and the dappled light through trees. I realised that I needed a repeatable shape to help me in the process of making as all of the textures would be different.  Luckily glass in it's molten state behaves like water, it flows and fills the void that it is placed in. When solid glass reflects and refracts light similarly to water too, so some decisions were easy to make. Choosing to work with blues and yellows to represent the sun and the river. I had been able to purchase some beautiful light blue recycled glass from a studio, this immediately gave me a distinct colour to work with that wasn't off the shelf.


Quarry Diamonds are often the underappreciated hero in many stained glass leaded windows, the pattern they create whilst simple reflects light beautifully and provides order and elegance. Having visited the home of the Portreeve at St Lawrence's Chapel and seeing the traditional plain windows I wanted to champion this shape and use it as a repeating form within the entrance way.


As a cast glass artist I have used alginate, the product that dentists use to cast impressions of your teeth, I have used this to cast textures of objects and the space around them. Thinking of the glass as capturing a moment in time, whilst this object is still exposed to the elements and may continue to decay the texture on the glass will stay the same. 

 

For this commission I was particularly keen to capture a central 'river' of textures. Textures of historical and local significance, from the surrounding areas from Ashburton to Buckfastleigh.  Personally I prefer to view the text of an object through the glass, most of the diamonds have been cast in this way, as if there is a layer of glass over the top of the texture that has been captured.  


There were some textures that I was keen to take that had to be replicated so that the texture was on the front surface of the panel and they could be touched. From top to bottom, the Bull ring found in 


Quarry diamond cast glass textures by Amy Whittingham
By Amy Whittingham July 29, 2025
Collaborating, Problem Solving, and Scaling Up
By Amy Whittingham July 29, 2025
Walking around the town and surrounding areas
By Amy Whittingham May 12, 2025
Commissioned to Create an Artwork for the Main Entrance
By Amy Whittingham February 6, 2023
Spring is in the air which is a good time to revisit those winter resolutions. Whether that means you are having a clear out or want to learn a new skill, it's the time of year to get your creative juices flowing.
By Amy Whittingham February 6, 2023
Make sure its level When making a mould for glass casting your mould needs to be poured onto a level surface. When heated up in a kiln glass will naturally fill the space it is in and form a flat level surface when cast, if the mould is not level then the glass won't be either. This is especially important when making flat relief open casts. Make your model taller As you are going to put cold chunks of glass or glass frit into the mould you make, the space that you allow for the glass to go in needs to have more depth than you intend the final glass piece to be. Glass Chunks and frit have lots of air gaps between them, when the glass melts and becomes liquid these gaps will disperse through the material. Learn to love the bubbles The space between the glass chunks, frit or panes will become bubbles, as the glass is liquid it is very thick similar to treacle so the bubbles take a while to rise to the top surface and pop. Some bubbles will stay trapped in the glass when it cools and turns solid. Some bubbles may pop on the surface at the end of the firing cycle, If you don't love this, it may be easier to re-fire the cast than to grind back the surface to a flat. Larger glass pieces = better clarity When filling the moulds, the bigger pieces of glass you use the less bubbles will be trapped between them. If you decide to use fine frit for example this will trap lots of little bubbles in the glass and will make the glass less transparent. The bubbles interrupt and distort the light that is able to travel through the glass, hindering the view through. If you love these tips share For more hints and tips Amy Whittingham has written a book called Glass Casting which is available via her shop. Amy also teaches in person glass casting courses from her studio click below to sign up.