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Open house announcement

From tomorrow, June 21st (Wednesday) to 25th (Sunday), our Otsuka Headquarters 1F (Otsuka Base) will be open to the public for 5 days. In order to make our 3D printing technology and upcycling more familiar, we have created an opportunity for anyone to visit our Otsuka base, where we conduct research and development on a daily basis.

Please take this opportunity to visit us.

*Reservations and contact are not required, so please feel free to contact us!


■ Period

6/21 (Wed) - 6/25 (Sun)

①10:00 ~ 13:00

②14:00 ~ 18:00


*The staff may be absent during the lunch break from 13:00 to 14:00.


■ Location

ExtraBold Co., Ltd. Headquarters 1F (Otsuka Base)

2-22-30 Kita Otsuka, Toshima-ku


★Nearest station

7 minutes walk from JR Yamanote Line "Otsuka Station" North Exit

1 minute walk from Toei Sakura Tram (Toden) Sugamo Nitta Station   



■ About what can be observed at the open house


① Observation of molding test products

We will exhibit samples output in the molding test so far.

Some of HONOKA's 3D printed products and processed products using waste tatami rush and resin, which won the Grand Prix at the Satelite booth of Milano Salone held in April this year, will also be exhibited.


② Observation of crusher and repeller

You can see the actual machines such as crushers and repellers that we are using in our material research.


Since the Otsuka base is currently being renovated, there is no actual machine on display such as the large 3D additive manufacturing machine "EXF-12". If you are interested, please contact us separately from the inquiry form on our website.


③ Exchange with researchers

Our researchers will be present during the open house and look forward to your visit.

Some members of HONOKA will also be present during the event. Please take this opportunity to interact with us. Our representative Hara will be present during the open house.


We look forward to welcoming you.

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