Five things we do, priced openly.
The three that carry the shop
Five-axis machining · £68/hr
Wire EDM · £74/hr
CMM inspection · £95/hr
What we machine, and in what quantity
One part, five things that have to be right
Every service, in detail
What each one involves, what it costs, and what it is actually for.
Three machines in the cell, all with through-spindle coolant and probing, and all running offline-programmed toolpaths proved in simulation before anything is cut. Five-axis matters for two reasons that are worth being specific about: it lets a complex part be finished in one or two set-ups rather than five, which removes the accumulated error of re-fixturing, and it lets a cutter approach a surface at the angle it wants rather than the angle the vice allows, which is most of the difference between a good surface finish and a re-work. Typical work is impellers, manifolds, structural brackets and instrument bodies. Envelope is 600 × 500 × 450 mm.
For the features milling cannot reach: internal square corners, thin sections that would deflect under a cutter, hardened material after heat treatment, and profiles in materials that work-harden the moment a tool touches them. We run submerged with automatic threading, so a long profile runs overnight unattended. Positional accuracy is ±0.003 mm and we hold a surface finish down to Ra 0.4 µm off the trim passes. Most of our wire work is dies, extrusion tooling, and aerospace parts where a corner radius on the drawing is smaller than any end mill that would survive the cut.
A Zeiss bridge CMM in a room held at 20°C ±1°C, because measuring a 200 mm aluminium part in an unheated workshop in February and calling the result 0.005 mm is a fiction. We run first-off, in-process and final inspection on our own work, and we also take in third-party inspection for other manufacturers who do not have the capability or the environment. Reports come as measured values against the drawing balloons, issued as PDF and as CSV if your quality system wants the raw data. Surface finish is verified separately on a Mitutoyo SJ-410.
Where the per-part price finally makes sense, because the set-up and programming are amortised and the workholding is already made. We run scheduled call-off batches for eleven customers on Kanban, holding finished stock here and shipping against your schedule so the cash and the shelf space stay with us rather than with you. In-process gauging at set intervals, with the measured data retained for the life of the part number. The operator who proves the first part runs the batch. That is deliberate: the person who knows what good looked like is the person who notices when it stops.
For the part that has been running since 1981, whose supplier has closed and whose drawing nobody can find. We scan or CMM the existing component, work out which of its dimensions are functional and which are the residue of how it happened to be made, and produce a modern dimensioned drawing and 3D model you own outright. That second step is the one that matters and the one most scanning services skip: a point cloud of a worn part copies the wear. We have recreated pump internals, gearbox selectors, textile machinery components and, once, a part from a working 1934 press.