The ULTRA TEC CONCAVE FACETING MACHINE
– Add a New Dimension to your Faceting
* Note: The Unit above is shown with a V2 Digital Faceting Mast. The Concave Faceting Machine does not include a mast
Concave faceting will raise your level of interest and excitement -- It creates “WOW!” stones.
Concave faceting “ain’t for kids”—it’s for someone who has experienced gem faceting and feels moved to the further enhancement of his gems. Starting out with a faceted stone done on your Ultra Tec Faceting Machine, your Mast is then moved and positioned onto the Concave Machine—and aligned to the radial tool for the setting and polishing of the concave facets.
Yes, weight is lost—so it is an unlikely technique to be applied to expensive materials, rubies and emeralds, but, concave faceting is a way of making more common and less expensive gem rough—often varieties of Quartz — into objects of enhanced beauty and brilliance— and enhanced value. And in any material, it provides enhanced satisfaction for the faceter who expresses creativity and skill.
Yes, it takes time, and thought - and gradually gained experience – and it takes equipment that can provide set-up ease, precision and repeatability, with controls of speeds and micro-adjustments.
FULL FEATURE PRECISION AND REPEATABILITY
-- This is the key element -- alignment of the faceted stone to the tool is critical.
Initial Alignment (and realignment, if that becomes necessary) of a “home position” is quickly and directly performed by using the supplied Alignment Block. The Alignment Block keys directly to the tool-holding Spindle—little room for error.
Tweaking the alignment
The Mast-mounting Block provides “fine-tuning” stone position -- analogous to the “cheater” on the Faceting Machine. The Block provides for both radial and lateral micro-adjusting.
Maintaining Quill Alignment
Once aligned, the Quill, which swings from side-to-side in its flat-faceting mode, needs to hold steady. This is accomplished with the supplied Rigidizer. It stops the side-to-side motion without inhibiting vertical setting or other functions. It is fast-mounting—– less than a minute--and later, fast de-mounting.
Two motion elements are involved—there is the Tool Drive that provides tool
rotation, and there is the Table Drive that provides tool reciprocation.
Importantly, independent motors and speed controls for these two elements are
provided. In general, high rotation speeds and high reciprocation speeds are
Safe-voltage 12 V DC/PM Motors are covered by protective housings.
The sturdy reciprocation table rides a smooth dual-track linear bearing system.
Cylindrical Tools -- Three basic tool sets are provided – Copper, and Phenolic, and Maple of 8 mm, 13 mm and 17 mm diameters.
The provided Adapters hold standard tool shank diameters for the many 'off-the-shelf' tools available from Ultra Tec or other companies: 3/8”, ¼”, 1/8”, and 3/32”.
The Concave Machine can be upgraded to include some, or even
all, of the features of the FANTASY MACHINE.
For example, the dial-in X positioning with dial-indicator readout, can be added
as a kit (that would allow you to work with ball-tipped tools). Other features
would require factory installation – but this upgrading capability became a
design consideration when we realized that many people would be faced with a
decision—Cavity or Fantasy?—and with a bit of thought, we could make that an
easier choice to make.
The Concave Machine, ready to facet with your (Rigidizer supplied)
Item number 2627.7
>> This page last updated Feb 1, 2011
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