Documentation for a Knife Customisation Project: The Spec Sheet That Prevents Disputes

📅 Aug 13, 2026 👁 views

Nearly every dispute between a brand and a cutlery factory traces back to a document that did not exist, or existed in two versions. The specification sheet is the cheapest risk control in private label, and it is the one most often left as an email.

This article sets out the documents a knife customisation project needs, what each one contains, and how they relate to each other.

The document set

Document	Purpose	Owner	When it is created	Revision controlled
Range brief	What the range is, for whom, at what price	Brand	Before contact with factories	Yes
Specification sheet (the spec)	The engineering description of each SKU	Joint	Before the first quotation	Yes, strictly
Product drawing	Dimensions, tolerances, geometry	Factory engineering	With the spec	Yes, with version numbers
Material declaration	What every component is made of	Factory	With the spec	Yes
Finish specification	Surface treatment of every visible part	Joint	With the spec	Yes
Packaging specification and dieline	Pack structure and dimensions	Joint	After the knife is defined	Yes
Artwork files	What is printed	Brand	After the pack structure is fixed	Yes, with print-ready proofs
Marking specification	Where and how the brand is applied	Joint	With the spec	Yes
Inspection standard	Defect classification, AQL, measurement methods	Joint	Before the first bulk order	Yes
Golden sample record	What was approved, dated and signed	Joint	At sample approval	Superseded, not edited
Compliance dossier	Test reports and declarations	Joint	Before first shipment to a market	Yes
Change log	Every change, by whom, when, and its cost effect	Joint	Continuously	Append only

The specification sheet in detail

This is the document that prevents most disputes, and it should fit on one page per SKU. Sections:

Section	Fields	Common omission
Identity	SKU code, product name, category, drawing number and version	Drawing version
Blade	Steel grade, hardness, blade length, height, spine thickness at heel and tip, grind type, edge angle	Spine thickness at the tip, which is what distal taper means
Handle	Material, construction, colour reference, length, cross-section, rivet pattern	Cross-section dimensions
Bolster and ferrule	Type, material, finish	Whether it is forged or stamped and welded
Finish	Process, coverage, edge exclusion zone	Edge exclusion zone
Marking	Process, location, size, depth, distance from edge	Distance from edge
Packaging	Format, dimensions, material, print process, insert type	Insert material specification
Unit data	Net weight, gross weight, pack dimensions, units per carton, carton dimensions, cartons per pallet	Cartons per pallet, which determines freight cost
Compliance	Applicable markets, test requirements, marking requirements	Target market list
Commercial	MOQ, unit price, one-off costs, payment terms, lead time	Carton and pallet data, again

The final row is where money is lost. A spec sheet without carton and pallet data cannot be used to compute freight, and freight is often 8 to 15% of landed cost. See cost breakdown and shipping.

Revision control without bureaucracy

Revision control fails in two directions: no control at all, or so much process that nobody updates anything. A workable middle ground:

One naming convention. For example CF-1001-spec-v03 and CF-1001-dwg-v03, with the spec and drawing versions kept in step.
A change log with five columns. Date, version, what changed, who requested it, cost or schedule effect.
A single approval route. One named person on each side who can approve a version. Not a group.
Superseded documents are archived, not deleted. A dispute about a delivery from eight months ago requires the version that was in force then.
Purchase orders reference the version. "Per spec CF-1001-v03" on the PO is what makes the version legally operative.

A change log with five columns is enough. The failure mode is not insufficient detail, it is the absence of any register, which makes every change untraceable.

Golden sample discipline

Requirement	Why
Two identical samples, one per party	Neither party can alter the reference unilaterally
Dated and signed on the sample or its label	Establishes which version was approved and when
References the spec and drawing version	Connects the physical to the written
Photographed in defined lighting	Photographs survive handling; the physical sample may not
Stored sealed and protected	A degraded golden sample is a degraded standard
Superseded, never modified	The history of approvals is the record

For anything with a visible surface finish or a printed logo, the golden sample carries information no document can express. Retain it properly. See surface finishes.

Documents in the sequence they are needed

Project stage	Documents required before proceeding
Before contacting a factory	Range brief
Before requesting a quotation	Draft specification sheet, target quantities, target price
Before approving a quotation	Itemised one-off costs, lead time statement
Before sampling	Specification sheet, drawing with version
Before tooling	Approved drawing, tooling ownership agreement
Before bulk production	Approved golden sample, inspection standard, packaging specification and artwork, PO referencing versions
Before first shipment	Inspection report, compliance dossier, packing list and carton data

Read as a gate list, this is a project management method. Each row is a check before money is committed. Brands that follow it rarely have a dispute about what was ordered.

The minimum viable document set for a small brand

For a first private label project with limited resources, the irreducible set is:

One specification sheet per SKU, including carton and pallet data.
One drawing per blade shape, version-numbered.
One golden sample per SKU, dated and retained by both parties.
One inspection standard covering defect classes and AQL.
One compliance dossier with the test reports and the declaration.
One change log.

Six documents. A brand that keeps only these six will be better documented than most of the market, and better positioned than a brand with a folder of emails. The purpose is not bureaucracy — it is that when a container arrives wrong, the conversation is about a document rather than about recollection.