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Nejigumi Box - Fine skill development - Koitoya Woodworking Class 2024

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Event description

Nejigumi Box - Japanese traditional Twist Joint

This is a 3-days course


26-28 January 2023


 Making a box with Japanese traditional joinery, Nejigumi, Twist Joint.

 Excellent educational program to learn about handmade joinery, by using pre-cut teaching kit.

A Chigiri (Butterfly joint) will be used in the timber that forms the lid of the box.

Well suited for intermediate to advanced woodworker.

Well suited for beginner who wants to start learning about detailed joinery work.

Highly detailed instruction and demonstration.


Neji-Gumi is the name of traditional joint, using angled joint in 2 ways. "Neji-ru" means to twist. In English, they are called twist joint or with some variation of the design will be called Sunrise joint. 

In the past, I saw a traditional Japanese hibachi using this joinery. Hibachi is a heater, a wooden or ceramic container lined with metal in which charcoal or wood is burned.  So, the structure has to be strong to withhold from the heat. They are very strong joinery.

It is one of difficult joinery too, but this program will focus on the basics of the joinery skills, like marking skill, chisel skill, jigs. And how you can apply these basic joinery skills into this Neji Gumi. In the end, it is about learning and upgrading basic skills.

Material you get will be partially pre-cut to start from easy step and step by step, develop into more difficult elements of the work, as you proceed.

You will gain the following from signing up

    1. Exploration of joinery techniques used in building a box
    2. Hands-on knowledge about Japanese tools (chisels and saws)
    3. Detailed knowledge about Japanese joinery.
    4. Inspiration and confidence for your next project


    26 - 28 January, 3 days (Australian Day long weekend)


    Proposed time schedule for each day.

    9:00-12:00 | 13:00-16:00

    * Please be flexible for your schedule after the class. Sometimes your project requires extra time to finish.


    Day 1

    AM: Overview of Project, Foundations of Twist Joint
    PM: Commence work on twist joint
    Day 2
    AM: Continue work on remaining twist joints
    PM: Cut butterfly joint
    Day 3
    AM: Complete work on twist joints, 
    PM: Glue Up, Finish


    Hiroshi Yamaguchi (KOITOYA Design/Make/Teach)

    28 years of experience. Learned in Takayama, Japan.

    About Hiroshi Yamaguchi



    Class size

    Maximum 12


    Koitoya Design/Make/Teach (Fyshwick, ACT)

    New address

    4/18 Maryborough Street, Fyshwick ACT 2609


    Please park your car in the public parking area along Maryborough Street (Free), opposite from Burning Log.

    We have two parking spots officially. Please contact me for the spot if you need to walk less for your health condition.

    Way to the workshop

    18 Maryborough Street is a battle-axe block, located inside of the block, so you will be walking through the driveway that leads to the block from Maryborough Street.

    The driveway has 2 accesses, one next to Burning Log, and one next to Sunrise Church.

    Unit 4 is a blue painted building on the right-hand side of the block.

    Album from past workshop

    Nejigumi Box Making workshop album

    Things to bring

    Please wear working shoes.

    Bring your own water bottle and lunch.

    Things to be supplied

    Tea and coffee, snacks, filtered water

    Refund Policy

    Personal cancelation

    Refunds up to 14 days before event

    Humanitix fee is nonrefundable.

    for more information, please contact Hiroshi

    koitoya@gmail.com / 0412340619

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    Refund policy

    Refunds are available up to 14 days prior to the event