Busbars8 min read
Busbar joint inspection: a field checklist
A bolted joint can look right, read right on a torque wrench and still run hot. This is the order to check it in before the panel is energised.
Read
Sourcing notes for custom parts
Drawings, tooling, quality and landed cost, from the team that runs the programmes.
All guides, page 11
Browse the full library.
Quality9 min read
APQP: the five phases and what each one delivers
A phase by phase guide to advanced product quality planning, the outputs that gate each stage and the failures that appear at launch.
Read
Quality9 min read
Ballooned drawings: how to prepare one that survives an audit
Numbering rules, what earns a balloon and what does not, and how to map every characteristic to a first article report without losing the revision trail.
Read
Quality10 min read
GD&T basics for custom parts: symbols, datums and control frames
A plain guide to the language that tells a supplier what a feature must do, not just how big it must be.
Read
Quality9 min read
Supplier audits: planning, evidence and scoring on site or remotely
How to set criteria before the visit, follow a part through the factory and decide which findings need a second look.
Read
Plastics10 min read
Injection moulding design guide for electrical housings
Wall sections, ribs, bosses, draft and material choice for MCB, MCCB and equipment housings that must insulate, locate and assemble.
Read
Quality9 min read
ISO 2768-2: geometrical tolerances and what replaced it
The H, K and L classes, the characteristics they covered, the gaps they left and the standard that now takes their place.
Read
Quality8 min read
ISO 9001 vs IATF 16949: what the certificate actually means
The scope, the exclusions and the audit regime behind the two certificates, and the questions that separate a system from a capable process.
Read
Quality10 min read
Plating thickness measurement: XRF, coulometric and cross-section
Three methods, three different answers. Where to measure on a plated part, what each technique can resolve and how to record a thickness that a customer will accept.
Read
Quality9 min read
PPAP: the 18 elements explained
What each element of a production part approval submission proves, who owns it and which ones buyers read first.
Read
Stamping9 min read
Stamping tool transfer checklist
What to verify before a die leaves one press or supplier for another, from die condition and press match to the trial run and the documents that follow the tool.
Read
Quality8 min read
AS9102 FAI vs PPAP: two approval routes compared
Both approvals happen before volume, but they answer different questions. Here is how the aerospace first article and the automotive production approval differ.
Read
Go from reading to checking
The guides are built around the same questions as the free tools. Size a busbar, check an ISO 2768 callout, build a first article report or compare landed cost.
The Qumek dispatch
One useful email a month
Drawing notes, supplier checks, tariff changes and the questions buyers keep asking. No newsletter filler, no daily drip.