PC 16.030

Straight-Sided Triangle, Step Crown

Robert H. Long, May 26, 2013
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DataVueopen
L/W
115%
Design RI
1.54
H/W
65%
Gear
96
V/W³
0.209
Symmetry
3
Facets
34
Tiers
12
Crown
6
Pavilion
28

Long, Robert; Facets, Feb 2014;

Note: At step C1, cut three facets at 32, 64 and 96, to be recut at C4 (Locator facets) Work assigned to the public domain

Wireframe

Straight-Sided Triangle, Step Crown 3D view
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Pavilion

#AngleFacetsNotes
G190.00°
164880
Establish Size
G290.00°
326496
Meet P1,P3
P170.00°
164880
Optional to level girdle
P252.00°
151747497981
Cut to TCP
P348.00°
164880
Meet P1 at Girdle
P446.00°
326496
Meet P1, P2

Crown

#AngleFacetsNotes
C147.00°
96
Set girdle thickness (See note)
C240.00°
164880
Level Girdle
C335.00°
164880
Meet C1, C2
C430.50°
3264
Level girdle. Recut all C1 facets.
C525.00°
164880
Meet C3,C4
T0.00°
96
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