"Manufacturing" Articles (69)

How to Run a Price Negotiation: From Cost Inventory to a Four-Category Request

In Japan, 90.7% of small suppliers now get a price negotiation. Only 54.2% of the increase actually passes through. The bottleneck is no longer access to the table, it is what you bring to it. Here is the four-category structure the JFTC guideline sets out, why you should not hand your cost sheet to the buyer, and four ways to build the number you ask for.

2026-09-22Ryuta Hamamoto

ZEROCK

A 30-Point Drawing Check List: Stop Misses With Process

When drawing review lives in one person's head, the veteran spots a problem in five minutes and the junior engineer misses the same thing three releases in a row. That is a process gap, not an attention gap. Here are 30 checks grouped into dimensions, tolerance, manufacturability, procurement, and compliance, with a sheet you can sign off and keep.

2026-09-20Ryuta Hamamoto

ZEROCK

How Long to Keep Drawings: Checking the 10-Year Rule Against the Statute

Everyone says drawings are kept for ten years, but no Japanese statute sets a retention period for drawings as such. The ten years is worked backwards from the Product Liability Act. Transaction records run two years under subcontracting law and books run seven under the Corporation Tax Act. Here is the statutory basis for each, plus a retention register you can hand an auditor.

2026-09-20Ryuta Hamamoto

ZEROCK

Writing an RFQ for Machined Parts: The 12 Items a Drawing Misses

"I sent the drawing and never got a quote" usually means the shop is stuck on something you did not tell them. Generic RFQ templates stop at part name, quantity, and due date, which is nowhere near enough for a machined part. Here are the 12 items that belong alongside the drawing, plus a form you can send as is.

2026-09-20Ryuta Hamamoto

ZEROCK

How to Estimate Machining Time: Setup, Cut, Measure, Rate

Search for machining time estimation and you get cutting-condition formulas. But a quote does not need spindle speed. It needs setup plus cut plus inspection, converted into hours and multiplied by a charge rate. Here is how to build that up operation by operation, and how to turn it into something you can show a customer.

2026-09-20Ryuta Hamamoto

ZEROCK

Nesting and Yield: What Really Sets Your Material Cost

Dividing part area by sheet area does not give you a material cost. Web width, clamp deadzone, kerf, and the standard sheet size decide how many parts come off a sheet, and that number is what sets the cost per piece. Here is how to calculate yield properly, with a sheet you can show a customer.

2026-09-20Ryuta Hamamoto

ZEROCK

Twelve Checks When a Customer Drawing Arrives

Push a customer-supplied drawing straight to the floor and you get the classic failures: building to a superseded revision, working around an instruction nobody could read, missing a return obligation. Here are the twelve things to check between receipt and start, plus a receipt register. Revision and confidentiality are the two that slip most.

2026-09-20Ryuta Hamamoto

Physical AI

Why Japan Can Come Back in Physical AI: Policy, Numbers, and TIMEWELL's Declaration

Japan was written off as a lap behind in generative AI. So why is physical AI, the AI that acts in the real world, the field where it can come back? This long read starts with the numbers Japan is losing on (IFR statistics), then goes through the AI Basic Plan (Phase II), the AI Robotics Strategy, the Japan Growth Strategy and its investment roadmap, the July-to-September news from NVIDIA, Arm, Hitachi and GENIAC, and the projected shortfall of 11 million workers by 2040. It reads the qualitative shift from tightly coupled to loosely coupled systems and from scale to integration and operations, and ends with TIMEWELL's own declaration that we are moving into physical AI.

2026-09-12濱本隆太

TRAFEED

Reading Economic Security in Japan's 2026 Monozukuri White Paper: Risk Analysis Now Centers on the Supply Chain

Reading Economic Security in Japan's 2026 Monozukuri White Paper: Risk Analysis Now Centers on the Supply Chain.

2026-07-10Ryuta Hamamoto

WARP

AI x Manufacturing Implementation Patterns: Predictive Maintenance, Quality Control, and Design Support [2026 Edition]

AI x Manufacturing Implementation Patterns: Predictive Maintenance, Quality Control, and Design Support [2026 Edition].

2026-04-24Ryuta Hamamoto

AI Consulting

Galaxy Z Fold 7 Display Technology: How Samsung Built the Thinnest Foldable Yet

A practical guide to Galaxy Z Fold 7 Display Technology: How Samsung Built the Thinnest Foldable Yet. Topics include Business, Consulting, Manufacturing.

2026-02-07Ryuta Hamamoto

AI Consulting

The Rise and Fall of the Hoverboard: Why the Future Gadget Disappeared in a Year

In the early 2010s, the hoverboard emerged as a futuristic vehicle that everyone envied, evoking scenes from science fiction films.

2026-02-07Ryuta Hamamoto