Bodkin

Definition and Overview

A bodkin is a tool used to thread elastic or cord through tube-shaped sewn sections. It secures the material in the tip clip, gripping section, or hole, and then advances it through the opening while holding the other end. In English, it is called a bodkin.

A bodkin does not refer to the elastic itself; it is a tool used in the process of inserting elastic. For this reason, it is distinguished from types such as elastic webbing, round elastic, and braided elastic, as well as from construction methods such as woven elastic, knitted elastic, and braided elastic.

Structure and Compatible Materials

The body has a slender shape and consists of a front section that holds the material to be threaded and a rear section that is operated by hand. Clip types are easy to grip flat elastic, while shapes that pass through a hole and hold the material in place are also used for thin cord and round elastic.

A bodkin itself does not have structural classifications for elastic such as woven, knitted, or braided. The elastic being threaded is made by weaving, knitting, or braiding around elastic yarn, and its thickness, stretch, and tendency for the ends to fray differ depending on the construction.

• Elastic webbing: a material that is easy to use for wide openings.
• Round elastic: used for hood openings and threading thin cord.
• Braided elastic: narrow in width and also suitable for specifications that use multiple strands in parallel.

Main Applications and Method of Use

It is used when threading elastic or cord through sewn openings such as waistbands, cuffs, hems, hood openings, and pouch openings on pants and skirts. It is a tool used in a wide range of processes, from sample sewing before mass production to repairs.

Secure the end of the material firmly to the tip and advance it little by little so that it does not twist inside the opening. Since the opposite end of the material can slip out easily, it is easier to work if you temporarily secure it in advance or leave enough length.

How to Choose and Handling Precautions

Choose a bodkin according to the width of the opening and the thickness or width of the elastic or cord. If the tip is too large, it may catch in the opening; if it is too small, it becomes difficult to hold the material securely. During prototyping, check it in the actual opening, including the seam allowance.

If elastic is stored stretched for a long time, or affected by high temperatures, ultraviolet light, detergent components, or similar factors, its recovery may weaken. It is important not to damage it by pulling too strongly with a bodkin, and to choose elastic that matches the washing conditions and product specifications.

After threading is complete, check for twisting in the elastic, overlap at the ends, and the stitching position. If knots or joints are bulky inside the opening, they can cause discomfort or snagging during wear, so consider the sewing method according to the specifications.

Differences from Similar Terms

A threader is a small tool used to pass sewing thread through a needle eye, and its purpose is different from a bodkin. An awl is a sharp-tipped tool used to align seam allowances, shape corners, and mark hole positions, and it is not primarily intended to hold elastic and pull it through.

Stretch rate is a specification term that indicates how much elastic lengthens when pulled. A bodkin is neither a term for stretch rate nor a term for the width or material of elastic.

Frequently Asked Questions

Can a bodkin be replaced with a safety pin?

For thin elastic or short openings, a safety pin may sometimes be used instead. However, a safety pin may come loose or damage the textile. For wide elastic, long openings, or work involving mass production or inspection, it is more stable to use a bodkin that matches the required holding power and operability.

What causes elastic to come out partway through when using a bodkin?

The main causes are insufficient securing at the tip, the bodkin or elastic being too large for the opening, or the tip catching on seam allowances or steps. Secure the elastic end firmly and check the width of the opening and the seam finishing before advancing little by little without forcing it.