Gemstone facetting machine Joy 1

Manufactured for highest precision in gemstone faceting

Here is a short summary of the faceting options you have using Joy 1

Faceting:

Using the „Joy 1“ even beginners can easily learn the faceting of gemstones. Cut charts that can be downloaded free of charge from the internet or bought as printed pattern-books help you setthe specifications of aspecific pattern easily at the handpiece and then grind and polish it. Because the rotation speed of the shaft is infintely variable it is possible to cut and polish on the same machine. For this you need additional grinding and polishing wheels – please do not hesitate to ask us for tips on suitable wheels.

Please see the instruction page for a pictorial instruction on faceting

Grinding Cabochons:

On „Joy 1“ single cabochons can be ground freehand or series using the pre-grinder. The stone is glued onto the brass dop after one side has been ground flat. In freehand grinding the stones are screwed onto the dop holder and ground on level wheels or special dish formed wheels (e.g. crystalite dishlapsmanufactured by abrasivetechnology, USA). For “sanding” and polishing nova discs with an adapter can be used. For series a special form wheel corresponding to size and form of the target cabochons is needed.

See also instruction page

Pegboard grinding:

Even traditional pegboard grinding is possible on this machine. Professional gemstone grinders with a training in color gemstone grinding know how to grind stones using the pegboard. In this traditional faceting method the raw stone is cemented onto a wooden stick. The grinding angle is determined by the position of the stick in the pegboard. The index is adjusted manually “by feeling”. It is obvious that Pegboard grinding is a handicraft that requires long practice but at the same time opens new design options.

Please see the instruction page for a pictorial instruction on pegboard grinding

Diamond grinding:

Is it possible to grind diamonds on the „Joy 1“? Yes it is! Because of the high rotation speed achievable (up to 3.000 turns/min.) it is possible to grind diamonds. For this you need:

• A raw diamond, if possible already cut and pre-formed (available on request at reputable diamond traders e.g. in Amsterdam). Cutting and pre-forming is also principally feasible but is complex, expensive and an art in itself, and you need a functioning old diamond saw and an old lathe
• One to two old diamond hand pieces (often available on ebay)
• A flat cast iron wheel and polycrystalline diamond powders of different grain

I succeded in grinding pre-sawn diamond balls (Congoballas) to „Dutch Roses“ on the Joy 1!

PRODUCTS