Precision CNC
Machining
CNC Turning
Oval Turning
Vertical Milling
Line Boring
Centreless Grinding
18 Operations
Cast-to-Finish Supply
Cast to Finish
Casting and
Machining Together
Alloy Selection & Casting
Component cast in the specified LM alloy via sand, GDC, LPDC, or HPDC — with DFM optimisation for machining allowances built in from the start.
Heat Treatment (where specified)
T4, T5, T6, or T7 treatment applied before machining where alloy and application requires — ensuring dimensional stability through the machining process.
CNC Machining to Drawing
Turned bores, milled faces, drilled and tapped holes, oval-turned profiles, threaded features, ground surfaces, and line-bored coaxial bores — machined to drawing tolerance.
Inspection & Despatch
CMM dimensional check, surface finish verification, pressure test where required — then packed and despatched as a ready-to-assemble component.
One
Complete
Supply Chain.
Bar Stock Machining
Precision Parts
from Bar Stock
Not every precision component starts as a casting. Creative Alucast’s machine shop accepts bar stock, billet, and tube material — aluminium alloy, mild steel, stainless steel — and machines complete components to drawing from raw material. Whether you need a one-off development part, a small production run, or a machined component to complement a cast assembly, we take it from stock to specification.
- Aluminium alloy bar, billet, and tube — all standard sizes
- Mild steel and stainless steel stock accepted
- Customer-supplied material welcome
- Prototype quantities through to batch production
- All 18 machining operations available on bar stock work
Turned Components
Shafts, bushings, pins, sleeves, spacers, adaptors, and threaded fasteners machined from round bar to complete drawing.
Ø up to 470 mm · Length up to 1000 mm
Milled Components
Plates, brackets, flanges, housings, and blocks machined from billet — pockets, slots, bolt patterns, and contoured faces from flat or profiled stock.
Oval-Turned Components
Elliptical profiles, non-circular forms, and controlled-ovality ODs machined from aluminium bar stock — up to Ø210 mm diameter, max 4.25 mm ovality.
Ground Components
Precision cylindrical components ground to tight diameter tolerance from turned blanks — bearing journals, seal surfaces, and gauge-quality shafts.
±0.002 mm diameter · Ø 0.7–100 mm
Send us your drawing
Standalone Machined Parts Welcome
Operations
Precision Parts
from Bar Stock
Straight Turning
Producing cylindrical surfaces of uniform diameter along the workpiece axis. The fundamental turning operation for shafts, pins, and bore pre-machining.
±0.007 mm
Dimensional
Ra 0.4 µm
Surface Finish
Taper Turning
Machining a gradual reduction or increase in diameter along the axis — producing conical surfaces, taper bores, and angled seating faces in a single pass.
±0.007 mm
Dimensional
Ra 0.4 µm
Surface Finish
Contour Turning
Following a programmed profile path to machine complex curved or stepped surfaces — used for radii, fillets, undercuts, and compound form features on rotational parts.
±0.007 mm
Dimensional
Ra 0.4 µm
Surface Finish
Facing
Machining a flat, perpendicular surface across the end of a workpiece — producing a clean reference face square to the axis, essential for mating surfaces and datum establishment.
±0.007 mm
Dimensional
Ra 0.4 µm
Surface Finish
Parting / Cutting
Using a narrow parting tool to cut off a finished component from bar stock or separate a machined section from the parent piece — enabling high-volume bar-fed production.
±0.007 mm
Dimensional
Ra 0.4 µm
Surface Finish
Oval Turning
Oval turning — also called non-circular or elliptical turning — machines an intentionally elliptical cross-section on a rotating workpiece. The CNC control varies the radial cutting tool position continuously and synchronously with each spindle revolution, generating a precisely programmed, repeatable oval profile in a single pass. The resulting cross-section departs from a true circle by a controlled amount — the programmed ovality — which can be specified independently for any angular orientation on the part.
How it works
Synchronised Tool Oscillation
Application Examples
Engine Pistons
Cylindrical piston skirts requiring controlled ovality to compensate for differential thermal expansion between pin axis and thrust axis in service.
Compressor Cylinder Components
Reciprocating compressor pistons and cylinder liners where non-circular bore profiles improve sealing contact under pressure loading.
Cam-Form Shafts & Rotors
Eccentric or multi-lobe profiles on rotating shafts — cams, lobes, and off-round journal forms that function by intentional departure from circular geometry.
Press-Fit & Interference Components
Oval OD profiles used to create controlled interference fits in circular housings — predictable clamp force across the major axis without distortion of the minor axis bore.
Special-Form Pump Components
Rotary pump rotors and metering components where elliptical cross-sections define the swept volume or clearance geometry of the pumping element.
Milling
Rotating multi-tooth cutters removing material across flat or shaped surfaces. VMC milling operations produce pads, pockets, slots, and contoured faces to tight parallelism and flatness tolerances.
- ±0.01 mm
- Dimensional
Drilling
Producing cylindrical holes using rotating twist or indexable drills. Drilling is performed on VMC and turning centres — covering through holes, blind holes, and spot-faced holes to drawing tolerance.
- ±0.01 mm
- Position
Boring
Enlarging and finishing a pre-drilled or cast hole using a single-point boring bar — achieving tighter diameter tolerance, improved roundness, and better surface finish than drilling alone.
±0.003 mm
Diameter (Line Boring)
Ø up to 65 mm
Bore Range
Counterboring
Enlarging the upper portion of a drilled hole to a larger diameter — creating a flat-bottomed recess that seats socket-head screws, dowels, or fastener heads flush or below the component surface.
- ±0.01 mm
- Dimensional
Countersinking
Producing a conical chamfer at the entrance of a hole to accept countersunk screws, de-burr edges, or create a bevelled seat — machined to the specified included angle (typically 90° or 120°).
- ±0.01 mm
- Dimensional
Profiling
CNC-programmed tool paths following complex 2D or 3D external contours — machining component outlines, curved flanges, pockets with radiused corners, and irregular external profiles to drawing geometry.
- ±0.01 mm
- Profile Accuracy
Threading
Single-point CNC threading produces external and internal threads to metric, UNC, UNF, BSP, and NPT standards — machined to class of fit (e.g. 6g/6H) from the same set-up as other turning operations.
- 6g / 6H class
- Thread Class of Fit
Tapping
Rigid CNC tapping forms internal threads using form or cut taps — producing threads from M3 to M48 and beyond in blind or through holes, with synchronised spindle reversal for clean, chip-free threading.
- 6H class
- Thread Class
Thread Milling
Helical milling of threads using a rotating multi-tooth cutter — preferred for large-diameter threads, hard materials, and situations where tapping risk is high. Produces precise thread forms in a single helical pass.
- 6g / 6g class
- Thread Class
Reaming
A multi-fluted finishing tool that follows a drilled or bored hole to achieve precise final diameter (H6/H7), improved cylindricity, and superior surface finish — critical for bearing housings and precision fits.
H6 / H7
Ra ≤1.6 µm
Bore Tolerance
Surface Finish
Knurling
Pressing a hardened knurling tool against a turned surface to produce a regularly patterned diamond or straight knurl — providing grip on hand-operated components, and used as an interference-fit surface for press-fit inserts.
- ±0.007 mm
- OD Tolerance
Operation 17
Line Boring —
Coaxial Precision
Line boring is a specialist precision operation used to machine two or more coaxial bores in a single set-up — guaranteeing that all bore centrelines are perfectly aligned along a common axis. It is not achievable by conventional CNC drilling or boring from individual set-ups.
Single Set-Up
All bores are machined with the workpiece stationary and the boring bar traversing — eliminating accumulated positional error between individual bore set-ups.
±0.003 mm Accuracy
Bore diameter held to ±0.003 mm on bores up to Ø65 mm — the tightest tolerance available for coaxial bore work in our machine shop.
Coaxiality
Bore-to-bore coaxiality maintained to within microns along the full bore length — critical for bearing or bushing alignment under load.
Capacity
Max bore diameter Ø65 mm · 250 mm thru-feed length · 180 mm infeed length · 2 dedicated machines available.
Typical Line Boring Applications
- Engine block main bearing housings
- Gearbox and transmission housings (shaft bore alignment)
- Pump bodies with multiple impeller shaft bores
- Hydraulic manifold and valve body coaxial bores
- Industrial frame and chassis pivot-pin housings
- Compressor and rotary equipment bearing housings
Specialist Operation
Machine Shop
Our Machine
Assets
2
Machines
CNC Turning Centre
| MAX TURNING DIA | Ø 200 mm |
| MAX TURN LENGTH | 400 mm |
| MAX BAR DIA | Ø 45 mm |
| TURRET STATIONS | 8 nos |
| QUANTITY | 2 machines |
2
Machines
CNC Turning Centre
| MAX TURNING DIA | Ø 300 mm |
| MAX TURN LENGTH | 500 mm |
| MAX BAR DIA | Ø 52 mm |
| TURRET STATIONS | 8 nos |
| QUANTITY | 2 machines |
4
Machines
CNC Turning Centre
| MAX TURNING DIA | Ø 470 mm |
| MAX TURN LENGTH | 1000 mm |
| MAX BAR DIA | Ø 52 mm |
| TURRET STATIONS | 8 nos |
| QUANTITY | 4 machines |
3
Machines
Vertical Machining Centre
| Travel — X Axis | 800 mm |
| Travel — Y Axis | 600 mm |
| Travel — Z Axis | 600 mm |
| Tool Capacity | 20 tools (ATC) |
| Quantity | 3 machines |
1
Machines
Vertical Machining Centre
| Travel — X Axis | 500 mm |
| Travel — Y Axis | 400 mm |
| Travel — Z Axis | 400 mm |
| Tool Capacity | 20 tools (ATC) |
| Quantity | 1 machine |
VMC Capability Summary
4 VMCs
- Max X travel — 800 mm
- Max Y travel — 600 mm
- Max Z travel — 600 mm
- 20-tool ATC on all machines
- Milling, drilling, boring, tapping
1 Machine
Machine 11 of 11
CNC Centreless Grinding
1-Axis CNC · Infeed & Through-Feed Modes
Centreless cylindrical grinding achieves tight diameter tolerance and excellent surface finish on turned components — without the need for centres or chucking. Suitable for both infeed grinding of short, shouldered parts and through-feed grinding of long cylindrical components in continuous production.
| CNC Controlled Axe | 1 axis |
| Min Grinding Dia | Ø 0.7 mm |
| Max Grinding Dia | Ø 100 mm |
| Max Job Length (Infeed) | 95 mm |
| Max Job Length (Thru-Feed) | 220 mm (without support) |
| Diameter Accuracy | ±0.002 mm |
| Quantity | 1 machine |
2 Machine
Dedicated Line Boring Facility · 2 Machines
CNC Line Boring
Coaxial Bore Specialist · ±0.003 mm Diameter Accuracy
| Max Boring Diameter | Ø 65 mm |
| Max Boring Length (Thru-Feed) | 250 mm |
| Max Boring Length (Infeed) | 180 mm |
| Diameter Accuracy | ±0.003 mm |
| Max Job Length (Thru-Feed) | 220 mm (without support) |
| Coaxiality | Bore-to-bore alignment in single set-up |
| Quantity | 2 machines |
Quality in Machining
Tolerance. Finish. Traceability.
±0.002
Grinding Accuracy
Centreless grinding achieves ±0.002 mm diameter tolerance — delivering the tightest dimensional control available in our machine shop, suited to precision shaft and bore fits.
±0.003
Line Boring Accuracy
Line boring achieves ±0.003 mm on bore diameter up to Ø65 mm — maintaining coaxial alignment between multiple bores in a single set-up for bearing and bushing housings.
CMM
Dimensional Verification
Critical features verified by coordinate measuring machine — first-off and in-process inspection confirming position, diameter, perpendicularity, and parallelism to drawing requirements.
Cast & Machined.
One Supplier.