Covington Machines - Small Sphere Machine 110 Volt
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Turn rough rounds into true, mirror-finished spheres with a purpose-built machine that makes marble restoration and precision sphere work far more consistent and repeatable.
Item Name:
Covington Machines - Small Sphere Machine 110 Volt
SKU:
COV382SSM
Description:
The Small Sphere Machine is a precision grinding and polishing unit designed to take a roughly rounded workpiece and bring it to a true, polished sphere. It uses angled cutter cups and rotating shafts that keep the sphere rolling through a continuous bath of grit slurry. This design helps maintain consistent cutting action while directing slurry away from the bearings. The cutter cup angle can be increased as the sphere rounds out, and a spring loaded head maintains contact so you do not need constant manual adjustment. The unit comes complete with one grit pan, instructions, a product guarantee, and one pair each of 1/4 inch, 3/8 inch, 5/8 inch, and 7/8 inch cutter cups. This is a strong choice for restoring marbles to original condition and for producing accurate spheres for scientific and artistic glass work.
How it is used:
- Preform your glass or stone workpiece to a rough round shape that fits the cutter cup range.
- Add grit and water to the grit pan to create a slurry bath.
- Run the machine so the cutter cups roll the piece continuously through the slurry, grinding high spots evenly.
- Increase the cutter cup angle as corners grind away to maintain efficient cutting.
- Progress through finer grits as needed to move from shaping to polishing and achieve a finished sphere.
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