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Machining method "Cylindrical shapes"

Ein Zylindrisch geschliffener Labradorit
Set labradorite

Cylinder-shaped gemstones are a popular shape for modern jewellery designs, but their

But making them is not as simple as the end product looks, but requires a certain amount of finesse.

First, the rough stone is sawn to size and the flat side is glued to a dopstick.

This metal rod is then clamped at a 90° angle, the index wheel is unhooked and the stone is ground round and rough.

the stone round and rough (max. 1,200 grit). The dopstick is then clamped at a 0° angle.

angle, the index wheel is fixed to any number and the stone is ground flat.

Ein zylindrisch geschliffener Spinell
Cylindrical spinel

Now the stone can be detached from the dopstick again and worked on by hand. To remove the wax with which the stone was glued to the dopstick, it is best to put the stick in the freezer. As soon as the wax has frozen, the stone can be easily removed from the dopstick. Finally, the gemstone is ground smooth and rounded and polished to soft, flat

rounded and polished. For this, we recommend the cabochon type, where the bottom side is cut flat and the top side is cut evenly curved (convex) towards the outside.

My tip: If you don't have a faceting machine, you can also use a stone drill and achieve the same effect. Just drill without a "ram" and the gemstone remnant will have a cylindrical shape.

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