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June 11, 2016

Peran Elementary Knot Moves Operations terhadap Pembuatan Variasi Pola Kerajinan Needle Tatting

Filed under: Uncategorized — aulianasalma @ 23:42
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Tatting is a delicate handmade lace formed usually by looping and knotting with a single cotton thread and a small shuttle (Merriam-Webster’s online dictionary, n.d.). Berikut merupakan cara dasar pembuatan serta bagian-bagiannya.

pi
Pada rangkaian double stitch tersebut, bagian yang saya sebut sebagai lingkaran X terdiri dari untaian yang secara kontinu saling tersambung dengan sambungan Y. Orientasi lingkaran Z dominan ke arah vertical, sedangkan sambungan Y horizontal, searah dengan benang Z yang merupakan lintasan rangkaian yang kemudian membentuk pola. Karena itu, pengaturan spasi antara lingkaran a yang satu dengan lainnya diatur oleh sambungan b yang dapat dilonggarkan hingga dapat dijadikan picot sehingga bentuk dari rangkaian double stitch ini akan melengkung membentuk lingkaran dengan sambungan Y berada di sisi paling luar.
Arahnya yang selalu memutar tidak menutup kemungkinan rangkaian tersebut memiliki variasi pola. Rangkaian tatting yang tertutup membuatnya bersifat kontinu, bermula dan berakhir pada satu titik yang sama.
Pada elementary knot moves operations, disebutkan bahwa:
On a given knot K, we may perform the following four operations.
(1) We may divide an edge, AB, in space of K into two edges, AC, CB, by placing a point C on the edge AB, see fig. 10
(1)’ [The converse of (1)] If AC and CB are two adjacent edges of K such that if C is erased, AB becomes a straight line, then we may remove the point C, see fig. 10.
(2) Suppose C is a point in space that does not lie on K. If the triangle ABC, formed by AB and C , does not intersect K, with the exception of the edge AB, then we may removeAB and add the two edges AC and CB. See fig. 11.
(2)’ [The converse of (2)] If there exists in space a triangle ABC that contain two adjacent edges AC and CB of K, and this triangle does not intersect K, except at the edges ACand CB, then we may delete the two edges AC, CB, and add the edge AC, see fig. 11.

po.JPG
(Fundamental Concepts of Knot Theory , n.d., para. 3)

Konsep tersebut terlihat pada contoh variasi pola tatting berikut.
pe.JPG
Berikut merupakan variasi pola tatting lain berdasarkan elementary knot moves operations.

pu.JPG

Referensi:
Tatting. (n.d.). In Merriam-Webster’s online dictionary. Retrieved June 10, 2016, from http://www.merriam-webster.com/dictionary/tatting

Fundamental Concepts of Knot Theory. n.d. Cornell University Site. Retrieved
June 10, 2016, from http://www.math.cornell.edu/~mec/2008-2009/HoHonLeung/page2_knots.htm

Gambar:

http://www.hhtatting.com/learn-how-to-do-needle-tatting-double-stitch.cfm
http://rozellalinden.blogspot.co.id/2005_10_01_archive.html

Auliana Salma
1306413681

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