Showing posts with label suspended sculpture. Show all posts
Showing posts with label suspended sculpture. Show all posts

Saturday, 5 January 2013

Trials and Tribulations

My first attempt at an enclosed form. The idea is to mix different blue glasses with clear bevels to throw coloured highlights when used as a suncatcher.



First step was to build two pyramids. These were then cleaned ready for finishing. They were then joined together. My fear was that the solder would melt through the join and fall inside the piece.

Sure enough, after carefully tacking and then closing the joint all the way around, I ran a full bead to finish the seam. Only one side then flowed through the joint and created a blob across the opposite edge. My first reaction, working on the principle that solder flows towards the heat was to melt the joint solder over the blob, holding this edge downwards so that the solder could fall out. This worked and cleared the blob that was over the foil. However some had solidified on the glass surface and this did not move.




Only one thing to do - melt all the solder around the joint to separate the two pyramids. It took a while, and damaged much of the copper foil. The positive result was that I devised a technique that should  avoid the solder flow problem. Sure enough, after replacing the copper I was able to join the two pyramids and obtain a reasonable bead of solder.


The sculpture was then spoiled by overenthusiastic washing that caused a few drops of water to smear two of the inside faces. I was not opening the piece again. It has been finished and will be kept in the studio as a reminder of the lessons learned.


Wednesday, 26 December 2012

A simple star

After the complications of constructing the last suspended sculpture I decided to do something nice and simple.

A traditional star using bevels. Just foil the pieces and pin them down on the board for soldering . . .

Rather than apply a patina the solder has been left silver, polished with finishing compound to delay tarnishing. Occasional applications of wax polish will keep the shine.
Even in a simple two dimensional piece beveled glass can provide pleasing shapes and throw an array of highlights, making a delightful suncatcher.


A collection of suspended sculptures throwing highlights into the room.


Suspended Sculptures 1

I find that working on one project usually triggers ideas for more designs. To this end I keep a sketch book devoted to ideas for glass projects. Often, what is eventually made is in itself an evolution of the idea in the sketch book.

My final project on the course was a three dimensional star constructed from square bevels.


While working on it I could see a number of possible developments, primarily by using coloured glass and by changing the shape of the component pieces.

My next step was a combination of the two, using coloured glass in 'kite' shapes that kept the 90° angle for the core of the sculpture.



This resulted in a more obvious star shape, but with the same basic structure. I used wispy amber glass for the vertical arms and a transparent amber with surface texture for the other arms. I also treated the solder with copper patina to get away from the bright silver lines that distract from the colour and texture of the glass (but would all to soon become a dull grey).

 For me the pleasure of glass is seeing it changing the light that shines through it.


The projected sunlight in this image enhances the texture of the glass surface.



A week or two later I decided to extend the basic design using coloured glass squares and bevels. A simple jig was set up to cut a selection of coloured two inch squares (which incidentally inspired another cubic design).

While quite simple in concept this piece proved something of a challenge to construct. I really need a bench vise with a swivel head to hold the pieces for soldering. As it was I made do with the two salvaged computer hard drives, blocks of wood, card and push pins. These enabled me to position the work to keep the joint being soldered horizontal.




The two bevels throw highlights, enhancing the projected colours.

The solder has been treated with a more complicated patina, using copper and black, to give an antiqued finish. While holding the piece and polishing I was reminded of my sextant, with its selection of square coloured filters that could be pivoted over the telescope lens and horizon glass to protect the eyes from the full strength of the sun.