Trilnot No. 4 Cut
 By
Charles Covill
Intermediate faceting project.
While the shape of this cut (here, shown in blue topaz) is similar to a triangle,
it's not a true triangle because of the soft corners. To get the name, I combined
the first three letters of “triangle” and the word “not” to
get “trinot.” This didn't sound quite right, so I added the “l,”
and voila: trilnot.
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- Angles for R.I = 1.610
- 43 + 13 = 58 facets
- 3-fold, mirror-image symmetry
- Several clear glass punties (handles)
- 96 index
- L/W = 1.106
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- L/W = 1.106
- T/W = 0.540
- U/W = 0.509
- P/W = 0.496
- C/W = 0.131
- Vol./W3 = 0.194
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| For information
on supplies, please see the Annual Buyers'
Directory.
Always ask for the MSDS (Material Safety Data Sheet) for any materials you buy,
which will give you reactivity, health hazard, and safe handling data. |
| PAVILION |
| STEP |
ANGLE |
INDEX |
| 1 |
41.00° |
14-18-46-50-78-82; cut to meetpoint at temporary cutlet |
| 2 |
52.37° |
02-30-34-62-66-94; meetpoint with 1 at temporary cutlet |
| 3 |
54.00° |
96-32-64; meet 1 and 2 at temporary culet |
| G1 |
90.00° |
14-18-46-50-78-82; start level girdle |
| G2 |
90.00° |
02-30-34-62-66-94; continue level girdle |
| G3 |
90.00° |
96-32-64; complete level girdle |
| 4 |
51.00° |
01-31-33-63-65-95; meet 2 and 3 at girdle, make new cutlet |
| CROWN |
| STEP |
ANGLE |
INDEX |
| 1 |
35.00° |
14-18-46-50-78-82; determine girdle thickness |
| 2 |
35.00° |
02-30-34-62-66-94; continue level girdle |
| 3 |
35.71° |
96-32-64; complete level girdle |
| T |
0.00° |
Table; meetpoint with 2, 3, and 4 |
| 4 |
17.60° |
09-23-33-63-65-95; meet 2 and 3 at girdle, make new cutlet |
The author of a book on faceting, Charles Covill is an Austin,
Texas-based cutter. Several of his designs have appeared in various facetors'
guild newsletters.
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