Any innovative project in mind? We will be happy to provide our expertise in fine cutting and microfabrication areas. Click image to open inquiry page and let's discuss details.

Using general-purpose NC machines, we succeeded in manufacturing a metal dice with side lengths of 100 micrometers, under normal temperature and pressure. (Tap image for press release.)


IRISO SEIMITSU dives into the secrets of microfabrication

Cutting and Assembling

Our cutting technologies contribute
to creating utra-precise items
for automobiles, medical, electronics, etc.

Ultra Fine Products

Accurate duplication of unique items
or parts without specifications possible
with scanning and related technology.

Collaborative Projects

Original items created using IRISO technology,
sometimes combined with insight and know-how
of other professionals.


Click TECHNOLOGY Menu above for details.


Dice with 300 micrometer sides

Fine Gear
2mm long

Rework of precise through holes

Precise through holes on dome surface

Micro Stamping
of Cut Seals


In the micro machining field it has been considered to be impossible to machine workpieces with a size of 0.02 to 1 mm (0.0008 to 0.04 in.). The Micro Part Handling System was developed to meet ever-growing "sub-millimeter" demands from the medical and other industries. This revolutionary system, which enables ultrafine parts to be carried and assembled easily, dramatically improves micro part handling that used to be performed by hand, and significantly increases mass-productivity as well as efficiency of a finishing process. Providing excellent cost performance, accurate movements and outstanding operability ensured by the use of high-precision components, the Micro Part Handling System opens up new possibilities for your production.

Smooth Operability
Three 300 MIC dice
on one rice grain!

Fine Parts Handling
Grasps φ0.147mm
powder gear parts.

Inserting Fine Wire
Hole: Φ0.01mm
Wire:  Φ0.005mm

Precise Screwing
First in the world
with Φ0.1mm gear!

Inserting fine pins
Hole: Φ0.22mm
Pin:  Φ0.2mm

Click image for details of Micro Parts Handling System, including PDF download.


State-of-the-art Scanning technology and craftsmanship are combined to recreate unique items and fine parts without drawings.
National Treasure "Divine General BASARA"
Clay model scanned, and 1/8 metallic work recreated.
Click image above for details.
Existing 3D Figures without Drawings Scanned and Recreated
Clay model:45x40x15mm
Recreated model:45x40x15mm


Existing 3d model recreated in different size
3D model: 240x140x130 (mm)
Recreated model: 10x5.8x5.4 (mm)

PRODUCT DEVELOPMENT - Original and Collaborative Projects

Titan Ruler
Titan machined,
w/Subaru Technica International

Launch project
of Xi series,
w/NTT DoCoMo

20th Anniversary

Machined Scopedog
Exclusive product,
limited to 5.
w/Okawara Factory

World's Fastest Dice
Spots of sides adjusted
so barycenter infinitely
in center


Hot Topics

Oct 4, 2017

<TV> IRISO SEIMITSU will be introduced in TBS "WAZABITO" TV program on Sundeay October 8, from 9:54pm. In Japanese

Focuses on Japanese technologies and craftsmanship, and dreams that craftsmen have. What becomes the driveforce to make dreams come true?

August 1, 2017

<NEWS> IRISO SEIMITSU holds exhibition teaming up with City of Iruma, from Aug. 2-8, in Maruhiro Monozukuri Project.

July 31, 2017

<NEWS> Succeeded in World's Smallest Machining, Plating and Assembling

On July 28, 2017, we succeeded in gold coating of world's smallest 0.1mm dice
   *Click here to see related image of gold coating after tarnish is removed.

April 2017

<MPHS> As for manufacturing process of 100 MIC dice, and fixing of dice with jig using Micro Parts Handling System, click here to watch youtube in the Micro Cutting R&D website.

April 27, 2017

<EXHIBITION> We will take part in "Sample Market & Precise Manufacturing Fair 2017" held at Ota-ku Sangyo Plaza PiO, on April 27 and 28.

January 10, 2017

<MEDIA> 0.1mm Metallic Dice introduced in Nikkan Kogyo Shimbun newspaper, on the front page.
Click here for details in Japanese. >>"Metallic Dice About the Size of a Hair Created"

December 12, 2016

<PRESS RELEASE> Fine Machining Technology Leads to Manufacturing of 100 MIC Metallic Dice!
100 MIC Dice>>

September 30, 2016

<MEDIA> IRISO SEIMITSU President introduced as innovator in AUDI website "ISM INNOVATORS"
 Click here for details in Japanese>>       Click here for related youtube>>

May 2016

<MEDIA> Micro Art Cut Seal introduced in Nikkan Kogyo Shimbun. 
Click here for details in Japanese>>

February, 2016

State-of-the-art machining center DMG MORI "HSC 30 linear" introduced!
Ultra fine machining with high surface quality.

February 27, 2014

IRISO SEIMITSU was awarded 3rd Prize in "MACHINING EXPERT Five-Axis Process Contest 2013" in Germany!