Round and Grooved Needle Eyes: What to Compare

Eight Needles Journal · Hand sewing

On Misuya Chubei needle packets, 丸 and 溝 refer to different eye shapes. That small detail can matter when you thread the needle, but it does not tell you the needle’s length or thickness. Here is how to read the choice without mixing those three things together.

Misuya Chubei – Hand Sewing Needle for Cotton – Round Eye 丸
Misuya Chubei – Hand Sewing Needle for Cotton – Round Eye 丸. Photo from the Eight Needles collection.

Maru and mizo: read the eye separately

In Misuya Chubei’s own explanation, maru means a round eye and mizo means a vertically elongated eye. The maker says its traditional emphasis is on the round form, while it also makes familiar elongated-eye versions in part of the range. The company associates the round eye with less thread movement and twisting during sewing; this is the maker’s explanation, not a guarantee that your thread will never twist.

Do not interpret “grooved” as the needle’s overall size. A grooved-eye cotton needle still needs to be matched to the cloth and thread, just as a round-eye one does.

Our introduction to Misuya Chubei. Watch the reel.

Threading is part of the choice

We would compare how comfortably you can thread the needle before judging its feel in the cloth. The eye, thread thickness and available light all matter during that first step.

A needle that suits the stitch still needs to be practical to prepare. Choose the eye form that works with the actual thread, while keeping length and thickness as separate decisions.

Close view of a Misuya needle showing the eye, shaft and tapered point
Follow the needle from the eye along the shaft to the point. Eye shape, length and thickness are separate features.

The numbers are another part of the label

Misuya Chubei’s official cotton-needle page lists three-no-one through three-no-five. All five are 0.71mm thick, while their lengths differ:

Cotton needleLengthThickness
三ノ一 · 3-133.3mm0.71mm
三ノ二 · 3-236.4mm0.71mm
三ノ三 · 3-339.4mm0.71mm
三ノ四 · 3-442.4mm0.71mm
三ノ五 · 3-545.5mm0.71mm

Within this cotton range, the second number increases with length. The official page describes packets of 25 needles of one chosen length, not a packet containing all five lengths. An assortment is a separately identified product.

Start with the needles your project needs

For a first selection, we would choose a small number of clearly labelled needles suited to the cloth and stitches ahead. Keep their packets so a favourite combination is easy to identify and reorder.

Check the complete maker name as well as the word Misuya. Different Kyoto businesses use that name. The needles discussed here are Misuya Chubei; dimensions and pack contents should match that exact range.

Make a useful comparison at home

If you want to compare eye shapes, use the same needle size where both versions are offered. Keep the thread and sample cloth the same too. Otherwise, a change in length or thickness can be mistaken for an effect of the eye.

Notice three things separately: whether you can thread it comfortably, how the threaded eye passes through the actual layers, and whether the needle length suits the stitch you are making. Keep the chosen packet beside the sample and note the size and eye form. Those notes make the next purchase much easier.

Compare the labelled options

Below are our round-eye and grooved-eye cotton listings, followed by a separate grooved-eye assortment. Check the selected size and pack contents on the product page before ordering. For choosing the needle around the cloth, read our hand-sewing needle guide.

Explore the Eight Needles Journal

Sources and further reading

Product information and background reading used in preparing this guide.

  1. Reference 1
  2. Reference 2
  3. Reference 3
  4. Reference 4