Precision casting specialized
for 3D complex shape
We are confident about the lost wax casting technique, but still keep moving forward to improve our skills
Lost wax casting process is a method of metal casting that has been known for a long time. We have been developing the basic technology established in the United States, and we have a top share in precision casting in the general industrial field in Japan.
We can handle everything from mold making to the machining process at each base factory.
Also, we have a comprehensive system by cooperating with some partner companies that specialized in surface treatment, heat treatment, and assembly.


More than 90 % of our productions have been operated by overseas factories.
The molds are manufactured in-house, and the tooling cost is cheaper than other manufacturing methods.
Both domestic and overseas factories have operated quality control under the steady management system that acquired ISO9001.
We have many years of experience in factory management, including employee training by Japanese personnel in overseas factories.
The main production factory operates 24 hours a day.
We have an example of a corresponding delivery time three weeks after the production drawing is finalized.
We have multiple base factories in Japan, Thailand, the Philippines, and Colombia.
Since they do not depend on one factory, it is possible to realize a steady supply even in an emergency.
We have more than 30,000 experiences with lost wax casting, which is the largest number among lost wax manufacturers.
We are good at simple to complex 3D shapes such as hollow structures, undercut shapes, and gear profiles.
Also, we can handle various materials such as iron, stainless steel, copper, aluminum, and some customer-specified materials.

Examples of Proposals

Modification of Manufacturing Method
Reduction in Thickness and Weight

Manufacturing Process

01. Wax molding
Create wax patterns by injecting wax into molds.
02. Ceramic coating
Coat about 4 to 6 layers of ceramic liquid and powder on the wax tree.
03. Dewaxing
Remove wax by high-temperature steam pressure.
04. Mold firing
Burn out wax completely, and sinter ceramic mold.
05. Casting
Pour molten metal into the mold.
06. Cutting
Remove the mold and cut products from the tree.
07. Heat Treatment
Realize stable metal structures by heat treatment.
08. Inspection
Inspect the product based on various strict quality standards.

Catalog Download


Classifications Materials
Carbon steel S25C, S45C
Chromium molybdenum steel SCM415, SCM435, SCM440
Nickel chromium steel SNC415, SNC815
Nickel chromium-molybdenum steel SNCM220, SNCM439, SNCM616
Tool steel SK105, SKS3, SKD11, SK85, SKD61
High-speed steel SKH51, SKH57
Austenitic stainless steel SCS13 (SUS304), SCS14 (SUS316), SUS303, SCS19 (SUS304L), SCS16 (SUS316L), SCS18 (SUS310S), SUSXM15J1
Martensitic stainless steel SCS1 (SUS410), SCS2 (SUS420J1), SCS2A (SUS420J2), SUS440C
Precipitation hardening stainless steel SCS24(SUS630)
Ferritic stainless steel SUS430
Duplex stainless steel SCS11(SUS329J1)
Heat-resistant steel SCH13, SCH21 ,SCH22
Special steel SUJ2 ,SUP10 ,SUM23
Cast iron FC200 ,FCD500
Aluminum alloy AC4C ,AC7A
Copper alloy CAC102 (pure copper), CAC302 (HBsC2), CAC403 (BC3), CAC703 (ALBC3), CAC802 (SzBC2), CAC502A (PBC2), CAC203 (YBs C3), CrCu (chromium copper)
Cobalt alloy Stellite 12

Tolerance Chart (mm)

Dimension Unspecified tolerance
0 - 10 ±0.15
10 - 25 ±0.25
25 - 50 ±0.40
50 - 75 ±0.60
75 - 100 ±1.00
100 - 125 ±1.30
125 - ±1.5%
Angular tolerance ±1.5°

Size Guides

Minimum size approximately 4cm
Maximum size approximately 30cm
Minimum weight approximately 30g (minimum thickness: 2mm)
Maximum weight approximately 30kg