Showing posts with label inclusions. Show all posts
Showing posts with label inclusions. Show all posts

Thursday, 17 January 2008

Creative Glass Guild January Challenge


The CGGE Challenge for January is for members to create glass art by recycling. The CGGE members have produced some fabulous glass items such as beads from wine bottles, fused roundels in stained glass, pot melts from scrap glass and fused glass "mistakes" smashed and then re-fused. Here is my contribution - although it is more of an example of "how not to"!
1. The first image shows a collection of old and battered picture frames that have float (picture) glass. All this glass is fusible but, as the source is unknown, I don't combine it with other float glass. Sometimes picture frames come with really poor quality glass and so I match like with like.
2. The second image shows a selection of metal items that I used as inclusions in the glass. These included copper, rusty washers and dubious metal decorations.
3. This image shows two fused glass coasters with metal inclusions. They were fused at the same firing in the kiln and they look fairly good!
4. The copper star shape has fused well because copper fuses at high temperatures and, as the copper shape is quite thin, it fused with a relatively flat air pocket inside the glass.
5. But look carefully at the coaster fused with rusty washers. Because of the variety and thickness of the metals the glass coaster has a stress fracture running along the base, which formed as soon as the coaster was removed, cold, from the kiln.
6. The final image clearly shows the stress fracture along the bottom of the glass. It's still in my studio and I look at it every day - waiting for the coaster to go "ping" and fall into pieces.

Tuesday, 9 October 2007

Inclusions in glass



What is an inclusion? Well it's anything that can be fused between two pieces of glass (but not glass itself).
What objects can be fused as an inclusion? Washers, razor blades, certain types of metal foils, copper wire, coins, leaves, clock parts......
What can't be fused as an inclusion? Paper, plastic, hair, fabric, string, wood, foodstuff.
Why can you fuse plant matter but not paper or fabric? Because they will all turn to ash in the intense heat of the kiln but certain plant matter will leave behind a skeleton in the shape of the inclusion - such as ivy leaves, ferns and heather.
Why has the glass cracked around the inclusion? This happens when the inclusion is too thick for the glass such as heavy coins and bulky washers.
I have fused metal foil in between my glass but it has turned black. It could be that the foil is too thin or that it isn't a fusible foil. for fusible gold, silver and copper foil coe 90 go to:
Copper sheet sometimes sheds small rusty or black residue between the glass. Clean the copper well with a silver cleaner and wash in hot soapy water before use.
Can all types of glass be fused with inclusions? Gosh, I don't know the answer to that one - I fuse inclusions (with the exception of the coe90 foils) between float glass coe 80 -82.
Fused glass sushi dishes with inclusions can be bought from http://glassprimitif.etsy.com/ and fused glass pendants from http://en.dawanda.com/shop/glassprimitif
These glass items have been designed and made by me (Glassprimitif). Please respect the copyright of this design.