PC 16.017

Bishop

Long, Robert H; Seattle F Design, Apr 93, p1
Save to collection
No ratings yet
DataVueopen
L/W
114%
Design RI
1.54
H/W
69%
Gear
96
V/W³
0.218
Symmetry
1 (mirrored)
Facets
52
Tiers
23
Crown
7
Pavilion
45

Same outline as 16.016 The Grace Cut. Start pavilion preform by rolling a low cone at 30 degrees.

Wireframe

Bishop 3D view
Top viewSide viewFront viewBack view

Pavilion

#AngleFacetsNotes
G190.00°
1482
Fix stone size.
G290.00°
3660
Level false girdle.
G390.00°
48
Level false girdle. This completes pref
P168.00°
1482
Meet P2-P2-G1-G1
P263.63°
48
Level girdle
P353.83°
3660
Level girdle
P451.19°
1185
Meet P2-P3-G1
P546.50°
4254
Meet P4-P5-G2-G3
P645.55°
4056
Meet P4-P5-P6-G2-G3
P744.79°
 888
Meet P1 at TCP
P841.80°
3165
Meet P3-P4-G1-G2
P941.00°
1436486082
Cut to TCP

Crown

#AngleFacetsNotes
C169.40°
48
Level girdle.
C262.00°
1482
Match pavilion. Set girdle width.
C347.03°
1284
Meet a-a-G1-G1
C445.55°
1680
Meet a-b-G1-G2
C540.08°
3660
Level girdle
C635.00°
4056
Meet b-c-G2-G3
C731.52°
3165
Meet a-b-e-G1-G2
C825.00°
1482
Meet e-f-j
C919.00°
3660
Meet b-f-g
C1015.00°
48
Meet g-c-g
T0.00°
96
Table