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Diamond Sphere Cups

Highland Park diamond sphere cups are designed from the segment up to cut and polish both soft and hard material fast.  With over 10 years of R&D in diamond segment technology, our sphere cups set the standard for production sphere cutting. 

Here is guide to selecting the right size cup:

Cup Size Inch Cups Size MM Sphere Size Range Inch Sphere Size Range MM
1" 25mm 1" to 1.4" 25  to 35.5mm
1-3/16" 30mm 1.3" to 1.6" 33 to 40.5mm
1-3/8" 35mm 1.5" to 1.8" 38 to 46mm
1-9/16" 40mm 1.75" to 2.1" 44.5 to 53mm
1-3/4" 44mm 2" to 2.6" 50.5 to 66 mm
2-1/4" 56mm 2.5" to 3.1" 63.5 to 78.5mm
2.5" 63mm 2.8" to 3.5" 71 to 90mm
3" 75mm 3.4" to 4.1" 86 to 104mm
3.5" 90mm 4" to 4.9" 101.5 to 124.5mm
4" 100mm 4.6" to 5.5" 117 to 140mm
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