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Capability / 04 Subtractive Manufacturing

Start with solid. Remove with precision.

Precision CNC machining for functional components, prototypes, replacement parts, tooling and bespoke manufacturing.

Controlled material removal. Precise geometry. A physical component.

02 What can we machine

From simple profiles to complex components.

CNC machining starts with solid material and removes only what isn’t needed. What that produces ranges from a flat profile cut to a contoured component with features on several faces.

01

Precision 2D profiles

Flat components cut to an exact outline, with holes, slots and cut-outs where the design needs them.

Outline & features

02

2.5D machining

Pockets, steps, bosses and recesses machined to controlled depths, which is where most real components live.

Depth & pockets

03

3D contour machining

Surfaces that change continuously across the component, machined with a three-dimensional toolpath rather than flat steps.

Continuous surfaces

04

Multi-side machining

Components with features on more than one face, machined through separate re-located setups so the geometry still agrees.

More than one setup

05

Rotary & 4-axis work

Cylindrical and rotational components machined while the material is indexed about its own axis.

Rotational geometry

06

PCB prototyping

Prototype circuit boards produced by isolation milling — single-sided, and double-sided designs where the layout suits the route.

Prototype boards

07

Engraving & fine detail

Machined lettering, identification, scales and detail cut into the surface rather than printed onto it.

Machined detail

08

Jigs, fixtures & tooling

Locating fixtures, soft jaws, assembly aids and tooling made for one specific task rather than bought as a compromise.

Repeatable work

Not every component suits machining, and not every material or operation is produced in the same setup. Geometry, access for a cutting tool, material, loading, quantity and intended use all affect the route. Material and process suitability are assessed per project, and we will say so when machining is not the sensible choice.

03 Who this is for

Precision doesn’t require a huge project.

A production fixture, a single custom bracket and a replacement part for something nobody makes any more all begin the same way: with a component that has to fit and has to work.

Commercial & engineering

Businesses and engineering teams

Functional components, machine parts, fixtures, tooling and replacements for equipment that has to stay in service. Machined from solid material, so the component has the properties of that material throughout.

  • Machine component
  • Located fixture plate
  • Mounting plate or bracket
  • Bespoke adapter
  • Replacement for an obsolete part

Individuals & creators

Individuals, makers and inventors

One aluminium bracket for a project that exists only in your head so far. A part for a model, a drone, a restoration or an invention. The quantity is different. The approach is not: the same design review, the same material conversation, the same line discipline.

  • Custom aluminium bracket
  • RC or model engineering part
  • Drone or robotics plate
  • Prototype PCB
  • One-off invention component

One component is a project. Bring us the requirement and we will help determine the route.

04 Prototype to machined component

Prototype it. Test it. Then take it further.

Finding a problem in a printed version is easier than finding it in a machined one. Where it helps, additive and subtractive manufacturing work as one development route.

Stage 01

CAD design

The geometry, developed or reviewed.

Stage 02

3D printed prototype

A physical version, quickly and cheaply.

Stage 03

Fit & function test

Does it fit, locate and do the job?

Stage 04

Design revision

Change it while changing it is cheap.

Stage 05

CNC machined component

Cut from solid, once the design has settled.

This is one possible route, not the default. Plenty of printed components are the finished part and should stay that way; plenty of machined components never need a printed version first. Which route suits yours is part of the conversation.

05 Replacement parts

When you can’t buy it, we can investigate rebuilding it.

Discontinued, worn out, broken or never available in the first place. Where the component can tell us enough, it becomes the starting point for its own replacement — and this is where the Studio Variant capabilities join up.

Stage 01

Broken or obsolete

The part you have, or what is left of it.

Stage 02

3D scan

The surviving geometry captured as data.

Stage 03

Reverse engineer

Features and intent read back out of it.

Stage 04

CAD model

Usable geometry, not just a surface.

Stage 05

Material & process review

What it was, and what it should be.

Stage 06

CNC machining

Cut from solid material.

Stage 07

Replacement component

Reviewed against what the job asked for.

Not every component contains enough surviving information to be reconstructed, and not every part should be remade in the same material it failed in. The investigation comes first, and we will tell you what the part does and does not establish.

06 Materials

The material matters as much as the geometry.

The same component in aluminium, acrylic and brass is three different parts. What it has to carry, where it lives and what it touches decide the material long before the toolpath does.

Non-ferrous metals

Metal stiffness and a machined metal surface. Suited to brackets, plates, mounts, structural components and visible machined detail.

  • Aluminium
  • Brass
  • Copper

Engineering plastics

Electrically insulating, unaffected by moisture and lighter than metal. Suited to panels, guides, spacers, covers and low-friction components.

  • Acrylic
  • Polycarbonate
  • HDPE
  • ABS

Composites & board materials

Very high stiffness for very low mass, and the board materials behind prototype circuit boards. Cut differently from metals and plastics, so reviewed per project.

  • Carbon-fibre sheet
  • Composite laminates
  • PCB / FR4

Wood & board

Patterns, templates, formers, enclosures and presentation pieces, where the material suits the component and the finish it needs.

  • Hardwood
  • Plywood
  • MDF & board

Specialist requirements

Something outside the families above, or a component where the material is part of the problem rather than a detail. Tell us the requirement and we will assess the route rather than guess.

  • Assessed per project

Material and process suitability are always assessed per project. Different materials and different operations are not all produced in the same setup, and the material a component should be made from is a decision, not an assumption.

07 Machining material finder

Don’t know which material you need?

Most people don’t, and you are not expected to. Describe what you are trying to make, or pick the closest application, and we will point you in a likely direction.

08 PCB prototyping

From mechanical to electronic.

The same controlled material removal, applied to copper. Isolation milling cuts the copper away around your tracks, so a prototype board can be produced from your design rather than ordered and waited for.

Stage 01

PCB design

Your tracks, pads and board outline.

Stage 02

Copper-clad board

Solid copper over the board material.

Stage 03

Isolation milling

Copper removed around the conductors.

Stage 04

Drilling & features

Holes, board outline and mounting features.

Stage 05

Double-sided work

Where the layout suits this route.

Stage 06

Prototype board

A board to prove the circuit and the fit.

This is prototype board production, not a PCB fabrication plant. Track width, pad geometry and whether a double-sided layout suits isolation milling are reviewed per project, and a board intended for production is usually better fabricated elsewhere.

09 Rotary & 4-axis work

Not every component is flat.

Cylindrical material can be held horizontally and indexed about its own axis while machining takes place, which opens up shafts, spacers, bushes, turned detail and features that wrap around a component.

This is rotary machining about a single additional axis, not simultaneous 5-axis machining, and we don’t describe it as such. What it suits, and whether your component is one of those things, is assessed per project.

10 Complex geometry

More than pockets and holes.

Machining terms sound like jargon until they are drawn. These are the five levels of geometry behind almost every machined component, in plain language.

2D profile

A flat outline. The cutter follows the shape of the component and stays at one depth.

2.5D features

Flat features at different depths — pockets, steps and recesses — each machined to its own level.

3D contour

A surface that changes continuously, so the cutter moves in all three directions at once.

Multi-side

Features on more than one face, machined in separate setups that have to agree with each other.

Rotary geometry

Features arranged around an axis, machined while the material turns rather than from one side.

12 Where projects begin

Start where you are.

You don’t need a finished design, a drawing or the right vocabulary to begin. Six of the usual starting points, and what tends to happen next.

“I have an idea.”

  • Conversation
  • Design
  • Material review
  • Machining

“I have a physical part.”

  • Measure or scan
  • Reverse engineer
  • Machining

“I have a CAD model.”

  • Design review
  • Material review
  • Machining

“I have a 3D printed prototype.”

  • Review what it proved
  • Revision
  • Machining

“I have a broken part.”

  • Investigation
  • 3D scan
  • Reverse engineer
  • Machining

“I have a PCB design.”

  • Layout review
  • Isolation milling
  • Prototype board
  • Production elsewhere

You do not have to buy every Studio Variant capability. Any one of these routes can stop wherever it stops being useful to you, and that is a normal outcome rather than an unfinished project.

13 How it works

From digital geometry to machined component.

01

Understand the component

What it is for, what it has to carry, where it fits, what it touches and how many you need. This is the stage that decides everything after it.

02

Design or design review

Develop the geometry, or review the model you already have — features, corner radii, wall sections, fastenings and whether a cutting tool can reach everything the design asks for.

03

Material selection

Choose the material from the requirement rather than from habit, and be explicit about what still needs to be confirmed.

04

CAM & toolpath preparation

Decide how the component will actually be cut: roughing and finishing passes, cutter sizes, depths of cut and the order features are machined in.

05

Setup & work holding

How the material is held, where part zero is set and how the component is re-located if features are needed on more than one face.

06

Machining

Material is removed in controlled passes — roughing first, then the finishing passes that leave the surfaces and features you see.

07

Finishing & review

Edges attended to, the component cleaned up, and the result reviewed against what the job asked for. If something needs to change, we say so.

08

Deliver

The component, and a clear account of what was made, in what material and how it was machined — so it can be repeated or revised later.

14 How far you take it

Your project. Your route.

Both of these are complete pieces of work. Neither is the consolation prize.

Route 01 — complete service

Machining only

Already have the design and simply need the component cut? Send the geometry and we machine it, with a design and material review before anything is cut from solid.

  • Review of the model against what machining can reach and hold.
  • Material and process confirmed against the requirement.
  • The machined component, made to the agreed geometry.
  • No obligation to continue with Studio Variant.

Route 02 — complete service

Full project

Starting from an idea, a broken part or a requirement rather than a model? Continue through the Studio Variant workflow, with one studio responsible at every stage.

  • 01 Scan, measure or reverse engineer
  • 02 Design and material review
  • 03 Prototype where it helps
  • 04 CNC machining, or another suitable route

15 Finish & detail

Precision you can see.

Machined components carry their process on the surface: the direction of the cut, the radius a cutter leaves in a corner, the crispness of an edge.

Machined face

A faced surface carries the arcs left by the cutter, which is why machined metal catches light the way it does.

Chamfered edge

A cut edge broken deliberately rather than left sharp — safer to handle and better to look at.

Pocket & corner radius

An internal corner can only be as sharp as the cutter that made it, which is a design consideration rather than a limitation.

Engraved detail

Identification and detail cut into the surface, so it is part of the component rather than applied to it.

Rotational features

Grooves, steps and diameters machined about an axis, with the surface pattern that rotation leaves behind.

These drawings show the character of machined surfaces, not a specification. Surface requirements, edge treatment and any finishing beyond machining are agreed per project rather than promised here.

Project size

One bracket. One PCB. One replacement part. One idea.

There is no minimum project. A single component, a small batch, a prototype or something that doesn’t exist yet — bring us the requirement and we will help determine the route.

16 Specialist requirements

Need something outside the standard route?

A material, a size, a process or a requirement that doesn’t fit neatly into anything above. Tell us what the component has to be and we will assess the route rather than force the project into the wrong one.

Some requirements are assessed and arranged through the most appropriate route for that specific component. What matters to you is the outcome, the responsibility and the account of what was done — all of which stay with Studio Variant.

Assessed per project

17 Project records

Reserved for real work.

These slots are held for genuine Studio Variant machining projects, recorded problem through process to result. Nothing illustrative will be presented here as completed client work.

Project record — reserved

Imagery to be added

Problem → Design → Material → Machining → Result

Project record — reserved

Imagery to be added

Problem → Design → Material → Machining → Result

From solid material to exactly what you need. One component. A replacement. A prototype. A PCB. A tool. Or something entirely new.

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