I obtained a heavyweight Cava bottle, deep olive in colour with a corked neck and a punted bottom.This would have made a great hanging light, but because of the shape, I wanted to make another cut flower vase, as I had done earlier with a similar shaped wine bottle. The extra weight would make for a particularly sturdy vase. This would require only one clean cut, so not exactly taxing or imaginative, but I want to use the bottle to it’s best possible re-use.
I wanted the cut to be well up the curve of the neck to help emphasise the curving nature of the vase shape, hopefully leaving an opening of around 40-50mm diameter. I selected my point, using the G2 bottle cutter to see where I could get a clean clearance on the cutting wheel without fouling, and set up to get a clean score line. The glass was pretty flawless, with a reasonably clean seam, so scored well. I used my regular hot water method to run the score, and as the glass was thick, I kept the water temperature quite high around 80 degrees celsius. I gave the bottle at least five full revolutions to ensure the glass was really warmed up well, and I could feel the heat coming through to my grip at the bottom of the bottle. A quick revolution of the bottle under the cold tap ensured the line of break was fully complete and visible under reflection in the light. A second pour of hot water separated the neck with a pretty clean edge, sloping inwards as is the case when cutting on the curve.
The glass was up to 6mm thick, and I took almost an hour to very carefully finish the edge using the diamond blocks, as I wanted another perfect example. the opening size was around 50mm, so was a tricky fit for the pads, but care taken ensured a great end result, with the one edge pit eliminated, and the inward sloping edge retained. With the great colour, heavy weight, and good surfaces, this bottle became a great looking yet very functional vase.