Precision Machining / Turning / Milling / Fabrication Est. 2026 / United Kingdom

Sheet 03 / Services

Services

Turning, milling, precision fitting, fabrication and everything that follows a part through to assembly. Eight services, described plainly, with what to send us for each one.

Drawing reference

CE-SHEET-03 / REV A

Eight services · Turning / Milling / Fabrication · One-offs to batch work

Contents

01 / Services

Eight services

Each entry below covers what the service involves, the sort of work it typically includes, and exactly what to send us to get a price.

SRV-01

CNC Turning

CNC turning covers the round parts: shafts, bushes, spacers, sleeves, pins and threaded components. Work is programmed and cut to the drawing, with diameters, lengths, shoulders, grooves and threads produced in a single set-up wherever the part allows.

Both one-offs and batch work are handled. A single part is set up and cut on its own; a batch is set up once and run through with the same tooling and offsets, so the last part matches the first.

Typical work

  • Shafts, spindles, pins and dowels
  • Bushes, sleeves, spacers and collars
  • Threaded components, metric and imperial
  • Grooves, circlip seats and undercuts
  • Replacement and reworked turned parts

SRV-02

CNC Milling

CNC milling covers the flat and prismatic parts — plates, brackets, covers and machined profiles. Profiles are cut from plate, then pockets, slots, counterbores and hole patterns are produced to the drawing.

Milling is also used as a second operation on turned parts, adding flats, keyways, cross-holes and milled detail that cannot be produced on the lathe.

Typical work

  • Plates, base plates and mounting plates
  • Brackets and machined profiles
  • Pockets, slots and counterbores
  • Drilled and tapped hole patterns
  • Flats and keyways on turned components

SRV-03

Precision Machining & Fitting

Not every job starts from new material. Precision machining covers boring, reaming, fitting and the reworking of worn parts back to a usable size, working to the fit the assembly actually needs rather than a nominal number.

Where a component has to mate with something already in service, the mating part is measured and the new work is matched to it. Fits and clearances are agreed before machining starts.

Typical work

  • Boring and reaming bores to size
  • Press, sliding and interference fits
  • Reworking worn shafts and housings
  • Reclaiming damaged or oversized bores
  • Fitting new components to existing assemblies

SRV-04

Fabrication & Welding

Fabrication covers frames, guards, brackets and stands in mild steel, stainless steel and aluminium. Material is cut, prepared, welded and then dressed, with machined detail added where a fabrication also needs a precise face, bore or hole pattern.

Repairs and modifications to existing fabrications are also part of this work — strengthening a frame, adding a mounting point, or rebuilding a damaged section.

Typical work

  • Welded frames, tables and stands
  • Machine guards and enclosures
  • Brackets and mounting arms
  • Repairs and modifications to existing fabrications
  • Drilled, tapped and machined detail on fabrications

SRV-05

Prototypes & One-Offs

Prototypes and one-offs start from whatever you have: a fully dimensioned drawing, a hand sketch with a few critical sizes, or a sample part that needs copying. A sketch is often enough to get a first part made, tested and revised.

Where a design would be easier or cheaper to make another way, we will say so before the work starts. That advice is part of the job, not an extra.

Typical work

  • First-off prototypes for testing
  • Trial components before committing to production
  • Single replacement parts
  • Parts reproduced from a physical sample
  • Design-for-manufacture feedback on a proposed part

SRV-06

Batch & Repeat Production

Small to medium batches are run with a repeatable set-up: the same tooling, the same offsets and the same inspection points on every run. That means a repeat order months later can be produced to match the earlier parts.

Maximum batch size depends on the machine capacity, which is listed on the machinery page as TBC until the client confirms the equipment list. If you have a quantity in mind, send it over and we will confirm what is achievable.

Typical work

  • Repeat batches of turned parts
  • Repeat batches of milled parts
  • Families of similar components
  • Kitted sets supplied ready for assembly
  • Top-up runs against an existing drawing

SRV-07

Repairs, Modifications & Reverse Engineering

When a component is obsolete, worn out or broken, the practical route is often to measure it, model it and make a new one. This service covers that whole process, from taking dimensions off the original part to producing a replacement that fits the assembly it came out of.

Modifications to existing parts are handled the same way — a shaft re-machined to a new size, a bracket redesigned with an extra mounting point, or a part adapted so a modern component will fit.

Typical work

  • Obsolete spares remade from a sample part
  • Broken shafts, pins and levers replaced
  • Worn housings and bearing seats reworked
  • One-off modifications to existing components
  • Dimensions taken from a part still in service

SRV-08

Assembly, Finishing & Fitting

The last stage of a job is often the one that decides whether it works. This service covers deburring and edge finishing, pressing bearings and bushes into housings, fitting components to each other and assembling complete items ready to be used.

Parts supplied from a batch can be finished and assembled as a set, so the customer receives something that is ready to fit rather than a box of components.

Typical work

  • Deburring and edge finishing
  • Pressing bushes, bearings and pins into housings
  • Fitting and setting sub-assemblies
  • Final assembly of complete items
  • Light surface finishing before dispatch

02 / Materials

Materials

A typical materials list. Grades, stock sizes and availability are confirmed per job before quoting.

Materials typically machined and fabricated TBL-03
Material Typical forms Typical use in the workshop
Mild steel Bar, plate, tube, section Shafts, bushes, brackets, frames, guards, repairs
Stainless steel Bar, plate, tube Corrosion-resistant parts, guards, fasteners, food-area components
Aluminium Bar, plate, extrusion Lightweight brackets, covers, plates, spacers
Brass Bar Bushes, fittings and small turned components
Bronze Bar, cast bar Bearings, wear bushes and bearing surfaces
Engineering plastics Rod, sheet Guides, wear pads, insulators and lightweight spacers
Grades held in stock TBC Stock grades and sizes to be confirmed — tell us the grade you need and we will check before quoting

Materials listed are typical for the workshop, not a stock guarantee. Grade, size and availability marked TBC are to be confirmed by Chilverstone Engineering.

03 / How it works

From drawing to dispatch

Four steps, the same for a single part or a repeat batch.

1

Send your drawings

Email drawings, sketches, photographs or send the sample part. PDF, DWG, DXF, STEP and IGES are all fine.

2

We quote

You get a price and a lead time, along with any question about tolerance, material or an easier way to make the part.

3

We manufacture

The job is set up and machined, with dimensions checked during the run rather than only at the end.

4

Inspect & dispatch

A final inspection against the drawing, then dispatch by courier or collection by arrangement.

What to include in your enquiry

  • Drawings — PDF, DWG, DXF, STEP or IGES
  • Quantities — single part or batch size
  • Material and grade, if specified
  • Tolerances and any critical dimensions
  • Finish or coating required
  • Required date, and whether it is fixed

Drawing formats

2D drawings are accepted as PDF, DWG or DXF. 3D models are accepted as STEP or IGES. If a part only exists as a physical sample, send it or a photograph with key dimensions and we will work from that.

Large files are fine — if an upload is awkward, email the drawings directly or send a download link.

Start an enquiry

Sheet 03 / Next step

Have a drawing? Let's talk about it.

Send us your drawings, sketches or a sample part and we'll come back with a price and a lead time.

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