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11. 十月 2026

Blown Glass Jar with a Cork Lid

A jar is blown like a bottle, but instead of a narrow neck its mouth is opened out on the pontil to nearly the full width of the body, with straight walls and a flat base so it stands and can be filled with a spoon. A wide cork punched from bark makes the lid. All furnace work, the gather, the pontil and the annealing follow the bottle blueprint.

高级

Half a day, plus annealing

说明

Gather, blow, pontil and anneal

The furnace, gathering, transfer to the pontil and annealing, step by step.

Blow a straight-sided bubble

Gather soda-lime glass, marver it into a cylinder and blow a bubble. Roll it on the marver to keep the walls straight and press the end flat on the marver for the base.

此步骤所需材料：

钠钙玻璃1 公斤

所需工具：

可达 1100 摄氏度的玻璃熔炉

玻璃吹管

滚料板（玻璃成型用平铁板）

玻璃吹制工作凳

耐热手套

安全眼镜

Mark the shoulder

Score a line with the jacks where the mouth will be, just beyond the full width of the body.

所需工具：

玻璃工钳

玻璃吹制工作凳

Transfer to the pontil

Attach the pontil to the base, crack the jar off the blowpipe at the scored line.

所需工具：

粘杆

玻璃吹制工作凳

Open the mouth

Reheat the open end and, turning the pontil on the bench rails, open it with the jacks until the mouth is as wide as the body. Fire-polish the rim smooth in the furnace.

所需工具：

玻璃工钳

可达 1100 摄氏度的玻璃熔炉

玻璃吹制工作凳

Crack off and anneal

Crack the jar off the pontil straight into the annealing oven and anneal it as for the bottle.

所需工具：

退火炉

耐热手套

Grind the pontil mark

When cold, grind the pontil scar on the base smooth on wet abrasive so it stands flat.

所需工具：

砂纸

磨刀石

Cut a cork lid

Measure the mouth's inside diameter. Punch a cork a little wider than it from thick, boiled cork bark with the cork borer, and taper its lower edge so it presses in.

此步骤所需材料：