METAL ADDITIVE MANUFACTURING ・ CONTRACT SERVICE

“Can you build this?”
— It all starts with that one question.

Contract manufacturing with metal 3D printing. In stainless steel, titanium, copper, and other metals, we build internal channels and fine features that are difficult to achieve by machining or casting — as a single piece.

Minimum wall thickness 0.1 mm, internal channels φ0.15 mm. From data to part on short lead times.

From 1 prototype
No tooling required
Quotes typically in 2 business days

Send your STEP / STL data for a feasibility check

WORKS GALLERY

Build Examples

All parts shown were built on our own in-house machine. If any of these look like your part, get in touch.

01 Internal channels and hollow structures

Build example: LEAP manifold — LEAP manifold

Numerous intersecting channels built as one piece. Teardrop-shaped openings eliminate the need for supports.

Internal channels
Support-free design

Build example: Combination manifold — Combination manifold

Hollow structure for air or water flow; used as a two-part assembly.

Hollow
Internal channels

Build example: Nozzle with built-in cooling channels — Nozzle with built-in cooling channels

Internal coolant channels.

Internal channels

02 Complex curved surfaces, fine features, thin walls

Build example: Impeller — Impeller

A classic example of the complex curved geometry metal AM excels at.

Complex geometry

Build example: Cooling fan — Cooling fan

Ti-6Al-4V, thinnest section 0.1 mm

Walls down to 0.1 mm.

Fine features

Build example: Medical / dental part model (orthodontics) — Medical / dental part model (orthodontics)

Fine, complex geometry.

Fine features
Complex geometry

Build example: Gripper for ultrasonic motor — Gripper for ultrasonic motor

Ti-6Al-4V, thinnest section 0.15 mm

Complex geometry

03 Design unique to metal AM (lightweighting, support-free, batch builds)

Build example: Engine part model — Engine part model

Globally optimized geometry, built without supports. Sixteen scaled display models built in a single run.

Optimization
Support-free design
Batch builds

Build example: Lattice structures — Lattice structures

Ti-6Al-4V

Three cubes built together on a single base plate. Lighter weight without sacrificing strength.

Lightweighting
Batch builds

Send your drawing or data to get started View all build examples

CAPABILITY

Capabilities

0.1mm

Min wall thickness

φ0.15mm

Internal channels

±0.05mm

Dimensional accuracy

>99.95%

Relative density

150×150×200mm

Build volume

2business days

Quote turnaround (typical)

Materials

Stainless steel
Titanium alloys
Copper alloys
Aluminum alloys
Heat-resistant alloys (incl. nickel-based)
Silver alloys
Tool steel

* Actual availability is confirmed during the feasibility check and quotation.

IN-HOUSE EQUIPMENT

HTL-150 — our in-house precision SLM system

All contract manufacturing runs on the HTL-150, the precision SLM system we operate in-house. Its 500 W fiber laser is focused down to a 40 μm spot, and in a sealed oxygen-controlled chamber (100 ppm O₂) it stably builds fine features down to 0.1 mm wall thickness at over 99.95 % relative density.

View full specifications

Process	LPBF / SLM (laser powder bed fusion)
Build volume	150 × 150 × 200 mm
Laser	500 W continuous fiber laser
Focused spot size	40 μm (ellipticity 0.993, GFI 0.990, Gauss-fit measurement)
Layer thickness	30–60 μm
Max scanning speed	6500 mm/s
Build rate	15 cm³/h
Dimensional accuracy	±0.05 mm
Minimum wall thickness	0.1 mm
Surface roughness	Ra 3.0–6.4 μm
Relative density	>99.95 %
Inert gas consumption	<1 L/min (O₂ concentration 100 ppm)
Dimensions / weight	940 × 900 × 1880 mm / 370 kg

* Accuracy, density, speed, roughness, and other figures vary with material, geometry, parameters, and pre/post-processing.

About purchasing & customizing this system

WHY US

Three reasons to choose us

Facing challenges like these?

You have internal channels, hollow sections, or lattice structures that are hard to produce by conventional machining or casting
You can’t find a supplier for small, fine-featured parts with high precision
Your prototype quantities don’t justify the cost of tooling
You simply have no one to ask, “Can this even be built?”

Complex internal structures, built as one piece

Internal channels, hollow sections, lattice structures — shapes that conventional machining and casting struggle with, built in a single piece. Minimum wall thickness 0.1 mm, internal channels φ0.15 mm, relative density above 99.95 %: fine features with high precision.

Fine features
Complex geometry
Internal channels

In-house machine, in-house operation — so answers come fast

Contract manufacturing runs on the machine we operate ourselves. Engineers who know the system inside out optimize build parameters for your geometry, and respond with feasibility and a quote typically within 2 business days.

In-house operation
Parameter optimization
Short lead times

Quality delivered with numbers

Under ISO 9001/14001 certification, geometry and dimensions are verified on two systems: a non-contact 3D profilometer (KEYENCE VR-6000) and a coordinate measuring machine (Hexagon CMM). Parts ship with a build parameter report, ensuring repeatability and traceability.

ISO 9001/14001
Inspection report

	Conventional machining	Metal 3D printing
Internal / complex structures	Some shapes cannot be machined where tools can’t reach	Built as a single piece
Design freedom	Constrained by tools and fixtures	High geometric freedom
Prototyping speed	Tooling and fixtures take time	From data, in a short time
Material waste	Heavy losses from cutting	Only what the part needs

* At production scale, conventional machining can be the better choice. We’ll recommend the best method for your application.

PROCESS

How contract manufacturing works

01
Send your data

STEP / STL
02
Feasibility check & quote

Typically 2 business days
2 business days
03
Parameter optimization

Tailored to the geometry
04
Build & post-processing

No tooling required
05
Delivery

Report included

* Lead time to delivery depends on part size and quantity.

Send your drawing or data to get started

FAQ

Frequently Asked Questions

QCan I order just one part?

Yes. We handle everything from a single prototype to small production runs. No tooling is needed, so small quantities are welcome.

QWhat data should I send?

Please send STEP / STL data. If you don’t have 3D data yet, attach a drawing (PDF, etc.) and get in touch anyway.

QHow much does it cost?

It depends on geometry, material, and quantity. Send us your data and we’ll respond with a feasibility check and quote, typically within 2 business days.

QWhat materials do you support?

Representative examples are stainless steel, titanium alloys, copper alloys, aluminum alloys, heat-resistant alloys (incl. nickel-based), silver alloys, and tool steel. Actual availability is confirmed during the feasibility check.

QWill my drawings and data be kept confidential?

All data you share is handled strictly as confidential information.

QCan I ask even if I’m not sure the shape can be built?

Absolutely. “Can you build this?” is all it takes to start. We’ll help you judge whether the geometry suits metal 3D printing.

COMPANY ・ SINCE 1996 ・ YOKOHAMA

Company Profile

Founded in 1996 in Yokohama, we are a manufacturer of precision motors — including ultrasonic motors — and laser-based equipment. We run our own metal 3D printer in-house and provide contract manufacturing.

Company name	TECHNOHANDS Co., Ltd.
Address	1-9-1 Maruyama, Isogo-ku, Yokohama, Kanagawa 235-0011, Japan
Business	Metal 3D printing contract manufacturing and sales / development, manufacture, and sale of precision motors (ultrasonic, DC brushless, etc.) and laser-based equipment (galvanometer motors, etc.)
Certifications	ISO 9001 / 14001

* ISO registration scope, sites, and numbers are listed separately. Application fields are subject to our track record and applicable approvals.