Manufacturing Capabilities: Size Range, Tolerance, Lead Time & Capacity

Process	Max Envelope (mm)	Typical Tolerance Range	Best For / Typical Applications	Control Strategy	Inspection Deliverables	Documentation Provided
CNC machining (3-axis & 5-axis)	Precision parts commonly up to ~300–400 mm per axis; larger parts are reviewed case-by-case during DFM to confirm setup and stability.	General features in the ±0.05 mm class; critical datums / fits achievable around ±0.01 mm level with an agreed datum scheme, fixturing concept and control plan.	Precision housings, brackets, base plates, jigs and fixtures, metal and plastic components where location, flatness and positional accuracy are key.	Process windows defined by material, wall thickness and aspect ratio; optimized fixturing, toolpath strategy and coolant/thermal control for stable CTQs.	CMM measurement for CTQ dimensions, gauge checks where applicable, basic hardness / material verification when required by drawing.	FAI / inspection report, key control plan items for CTQs, material certificates and surface treatment certificates supplied on request.
Swiss lathe turning	Long and slender shafts, pins and bushings within bar capacity of the machine; diameter range from miniature features to typical automotive fastener sizes.	Diameters typically controlled in the ±0.005–0.01 mm range on suitable geometries; lengths and secondary features aligned to drawing and gauge strategy.	High-volume pins, shafts, bushings, fastener-type parts and precision turned components with strict concentricity, run-out and surface finish requirements.	Guide bushing optimization, tool wear monitoring and Cpk-based capability runs on CTQs; real-time checks on run-out and concentricity vs. datums.	Gauge charts or CMM snapshots for critical diameters and run-out, SPC / capability data where requested, sampling records for production lots.	PPAP/FAI style reports for automotive programs, dimensional summaries per control plan, material and heat-treatment certificates as required.
Injection molding / export molds	From small precision parts to medium-size housings; mold size and press tonnage are selected to keep cavity layout and cooling balanced for the part envelope.	General plastic features typically in the ±0.05–0.10 mm range; tighter local tolerances reviewed by resin, wall thickness, gate position and steel-safe strategy.	Functional plastic parts, clips, gears, enclosures and cosmetic housings; serial production plus export molds for OEM / Tier-level supply chains.	DFM backed by Moldflow where needed, balanced gating and cooling, steel-safe adjustments after trials and reference master samples for critical areas.	Dimensional reports across cavities and shots, steel-safe tracking, trial (T0/T1…) reports and cosmetic inspection records for visible surfaces.	Mold design review notes, molding parameter windows, FAI / capability reports and full export mold documentation package when required.
Rapid tooling	Small to mid-size parts where tool life is limited but geometry needs to be close to the final design; envelope defined during DFM review.	Target tolerances similar to production tooling but with realistic limits based on tool material and expected shot count; CTQs defined case by case.	Design validation, bridge runs and pre-production builds where speed and cost are more critical than long-term tool life.	Tool layout and steel choice optimized for short lead time, simplified cooling and ejection; any critical fits or cosmetic zones highlighted up-front.	Sample measurement reports on key dimensions, limited cavity balance checks, basic cosmetic review and feedback for design adjustments.	DFM summary including tool life assumptions, agreed tolerance targets on CTQs and a simple control plan outline for the prototype phase.
Vacuum casting	Small to medium housings, covers and cosmetic components replicated from a CNC or 3D-printed master within the silicone mold envelope.	Typically around ±0.20 mm, strongly influenced by master quality, overall part size and selected PU formulation.	Appearance models, functional mock-ups and low-volume builds (for example 5–30 pcs per iteration) where tooling cost must remain low.	Careful control of mixing ratio, degassing and cure schedule; reference back to the master part and visual standards for cosmetic evaluation.	Check samples vs. master for key dimensions, visual inspection records for color / gloss / defects and basic functional fit checks.	Master part approval record, casting process parameters, color references and snapshot measurement notes used during subsequent batches.
3D printing	Prototype components within the build volume of the chosen additive process; ideal for complex internal channels and lightweight structures.	Process-dependent; typically suitable for ±0.10–0.30 mm, with localized tightening on critical zones agreed at RFQ stage.	Concept parts, early design reviews, assembly and fit-check components, jigs and fixtures where no hard tooling is justified.	Process selection based on geometry and material needs, orientation planning to balance support vs. surface quality, plus optional post-machining.	Basic dimensional spot checks on key features, fit-check records against mating parts and surface condition notes when finishing is specified.	Additive build report (process and material), post-processing notes and, where relevant, a proposal for transition to CNC / molding.
Laser cutting / sand casting	Laser: sheet parts within machine bed size and thickness range. Sand casting: larger structural parts sized to the casting line and machining envelope.	Laser: sheet tolerances depending on thickness and spec. Sand casting: casting tolerance plus agreed machining allowance on critical faces.	Laser: flat parts, brackets, blanks and profiles before machining. Sand casting: larger structural components where weight and cost must be balanced.	Laser: nesting and heat-input control for stable edges. Sand casting: gating and riser design plus defined machining stock on CTQs.	Laser: dimensional checks on profiles and hole positions. Sand casting: machining inspection on referenced datums and functional faces.	Cutting or casting certificates where applicable, machining inspection reports and agreed notes on residual stock / clean-up areas.

3-axis / 4-axis CNC

General prismatic parts, pockets, brackets, plates

Materials

Aluminum alloys, carbon and alloy steels, stainless steels, copper alloys, and a range of engineering plastics (POM, PA, PBT, PC, etc.). Material selection is aligned with your drawing and our materials recommendations.

Size & geometry range

From small precision inserts and blocks up to mid-size housings and brackets (exact envelope confirmed per drawing)
Recommended minimum wall thickness typically in the 0.8–1.0 mm class for metals, thicker for plastics depending on geometry

Typical tolerance bands

Standard machining: around ±0.05 mm on non-critical features when drawing and fixturing are reasonable
High-precision features: down to ±0.01 mm class on selected CTQs with agreed datum scheme and inspection

CTQ-based inspection CMM / gauge ready

Surface finish & post-processing

As-milled finishes can typically reach Ra ~1.6–3.2 µm, with options for bead blasting, anodizing, plating and other surface finishing processes when geometry and tolerance allow.

Common constraints & risks

Thin walls and long pockets are prone to deflection and chatter under cutting load
Very long tool overhang can cause vibration and poor surface finish
Heat build-up in localized areas may lead to slight distortion on slender parts

5-axis CNC machining

Complex shapes, reduced set-ups, positional accuracy

Best suited for

Freeform surfaces, impeller-like geometries, and complex contours
Parts requiring multiple sides machined in one clamping to control true position and concentricity
Features that become unstable or impossible with multiple re-clamps on 3-axis/4-axis only

Capability highlights

We use 5-axis machining to reduce set-ups, keep datum relationships stable, and improve consistency on complex parts. Typical envelope is suitable for precision aluminum and steel components; full travel details are confirmed against your 3D model and drawing.

When 5-axis is recommended

Critical positional tolerances linking multiple faces and bores
Deep features at compound angles where 3-axis requires complex fixturing
Prototype and low-volume parts where reducing set-ups reduces overall risk and lead time

When 5-axis may be overkill

Simple prismatic parts with all features accessible in a few 3-axis set-ups
Parts where tolerance drivers are mainly flatness and parallelism, not complex orientations

In such cases, we will recommend a 3-axis / 4-axis route to keep cost and cycle time efficient.

Swiss lathe turning

Long, slender and small-diameter parts

Typical applications

Slender shafts, pins, bushings, and stepped spindles
Automotive, electronics and medical-style small components
High-volume parts requiring consistent diameter and concentricity

Bar & length range

Swiss-type lathes are optimized for small to medium bar diameters and long parts supported by a guide bushing. Detailed diameter and length ranges are listed in our equipment list and confirmed for each project.

Tolerances & run-out control

Very competitive diameter tolerances and roundness on critical fits, supported by gauge-based inspection
Concentricity and run-out controlled via process capability (Cpk) tracking on key dimensions

Burr & edge quality

Deburring methods are defined per part (mechanical, brush, or hand deburr) and linked to inspection so threads, edges and sealing faces meet functional requirements without over-chamfering.

Risk focus

Slender parts bending during machining or handling
Micro-burrs in threads and cross-holes if not specified clearly

We address this with guide-bushing optimization, stable clamping, and defined deburr standards on the drawing and control plan.

Process	Best for	Typical tolerance	Limitations
3D Printing	Fast fit & form checks, early design reviews, complex internal channels and fixtures without tooling cost.	Typically around ±0.10–0.30 mm, with tighter local control possible on compact, well-supported features.	Surface finish and accuracy are not equivalent to CNC or molded parts; large flat panels, very thin ribs and long straight edges are more sensitive to distortion.
Vacuum Casting	Appearance models & small batches that need to look and behave closer to injection-molded plastics for demos or pilot builds.	Typically in the ~±0.20 mm class, depending on master quality, part size and PU system.	Colour, gloss and shrink can vary between pours and across silicone mold life; dimensional drift increases as the silicone tool ages.

Material Category	Machinability	Typical Risks	Recommended Tolerance Strategy
Aluminum alloys (e.g. 6061, 6082, 7075)	Easy High chip load and good surface finishes achievable on most geometries.	Thin walls and large pockets can distort during machining and during anodizing or other surface finishes. Burrs may appear on small holes and slots if feeds are aggressive.	Use a realistic baseline such as ±0.05 mm for general features and tighten to ±0.01–0.02 mm only on critical fits. For anodized parts, consider adding extra stock or defining inspection "before / after" surfaces.
Carbon & alloy steels	Medium Stable to machine but tool wear is higher than aluminum, especially after heat treatment.	Distortion after hardening, heat-affected zones around features, and tool wear on high-strength grades. Burrs on cross holes and sharp edges if not deburred specifically.	Define separate tolerance expectations for pre- and post-heat treatment operations. Keep most features at general machining tolerances and reserve tighter bands for datum-related bores and fits where CMM / gauge inspection is planned.
Stainless steels (e.g. 304, 316, 17-4)	Medium Machinability depends strongly on grade and condition; work hardening can occur.	Tool wear, work hardening at the surface, and built-up edge can affect surface finish and dimensional stability. Burrs on slots and small features if chip evacuation is not ideal.	Allow slightly looser general tolerances where possible; apply tight limits only to sealing faces and functional fits. Pair tight tolerances with clear surface finish and passivation requirements so we can select suitable tooling and inspection.
Copper & copper alloys (brass, bronze, etc.)	Easy–Medium Good machinability but some alloys are gummy and generate long chips.	Smearing of edges, burr formation on small holes, and surface scratches during handling. Thermal expansion can influence tolerance on larger parts.	Use moderate tolerances (e.g. ±0.05 mm) for general geometry and tighten on sealing diameters and electrical contact areas. For cosmetic surfaces, combine realistic tolerances with clear requirements on grain direction and handling.
Titanium & difficult alloys	Difficult Low thermal conductivity and high strength make machining slow and tool-sensitive.	Tool wear, heat build-up, and distortion on thin sections. Risk of chatter on long overhangs and poor surface finish if parameters are too aggressive.	Limit tight tolerances to truly critical features and keep the rest at relaxed levels to allow stable cutting conditions. For thin walls, plan extra support material and accept that some areas may need process-specific discussion during DFM.

Material	Molding Risk	Recommended Wall Thickness Range*	Design Notes
ABS	Moderate shrinkage and warpage risk if wall sections vary strongly. Surface defects can appear near thick bosses and ribs.	Approx. 1.5–3.5 mm for most housings and structural parts.	Keep walls as uniform as possible and use ribs instead of solid sections to create stiffness. For cosmetic parts, combine realistic wall ranges with texture and gate planning to avoid flow marks.
PC / PC-ABS	Higher internal stress sensitivity, risk of stress cracking around sharp corners, screw bosses and over-tightened fasteners.	Approx. 1.8–3.0 mm depending on stiffness and transparency requirements.	Use generous radii at internal corners, avoid sharp transitions and design fastener zones with metal inserts where possible. For clear PC, wall and texture choices affect optical quality strongly.
PA (nylons, with or without glass)	Sensitive to moisture; warpage and dimensional drift can occur as humidity changes. Glass-filled grades increase stiffness but also warp tendency.	Approx. 1.5–3.0 mm for unfilled; slightly thicker for glass-filled grades.	Design ribs and bosses with balanced wall ratios to reduce warp. For precision fits, consider assembly clearances that account for moisture uptake and specify conditioned measurement where relevant.
PP / PE	Higher shrinkage, especially on thicker sections, and tendency for warpage if cooling is unbalanced. Flexible parts can be hard to measure consistently.	Approx. 1.5–3.0 mm for typical technical parts; can be thinner for flexible living hinges.	Use smooth transitions and avoid very thick sections. For living hinges and snap features, keep geometry within proven ranges and accept that tolerance bands are more functional than purely dimensional.
POM / PBT and similar engineering resins	Dimensional stability is good when designed correctly, but sharp edges and notches can concentrate stress. Some grades are sensitive to specific environments.	Approx. 1.2–3.0 mm depending on gear/functional vs. housing components.	Pay attention to draft and demold direction; avoid undercuts that require complex sliders. For moving parts (gears, cams), combine reasonable wall thickness with adequate radii and lubrication plans.

Area	Capacity Range (Indicative)	How to Read This
Tooling (rapid & production molds)	From pilot tools and single-cavity rapid molds up to dozens of production and export molds per year, depending on complexity and validation loops.	Programs may use a few rapid tools for trials plus selected export molds for long-term supply. Capacity planning includes design, build, sampling and modification windows.
CNC machining	Continuous output across multi-axis machining centers and turning cells, supporting a mix of prototypes, small batches and repeat orders each month.	We balance high-mix, low-volume parts with recurring items by slotting prototype work and repeat parts on compatible machines and shifts.
Injection molding	Multiple presses in small-to-medium tonnage ranges, covering short qualification runs through to steady monthly supply for selected parts.	Each mold has a planned shot volume and changeover strategy so that new tools, PPAP lots and stable production all fit into the same machine park.

Process	Typical Lead Time Range*	Comments
CNC machining	Approx. X–Y working days for prototypes; longer for complex multi-op parts or large batches.	Lead time is driven by material availability, fixture complexity and inspection depth. Repeat orders are usually shorter once process is proven.
3D printing	Approx. X–Y working days from data release to shipment.	Fastest for geometry checks and assembly trials. Surface finishing or painting steps add time if required.
Vacuum casting	Approx. X–Y working days including master, silicone mold and casting.	Lead time depends on number of parts, color requirements and number of silicone tools needed to cover the quantity.
Rapid tooling	Approx. X–Y weeks from DFM sign-off to first shots.	Aimed at bridging between prototypes and full production tools. Validation loops are shorter than for long-life molds.
Production mold	Approx. X–Y weeks including DFM, mold design, tooling and T0/T1 stages.	Multi-cavity, complex sliders or high cosmetic requirements can extend timelines. PPAP/FAI and additional trials are planned into the schedule.

Quick engineering answers (snippet-friendly)

CNC machining tolerance capability

Swiss turning concentricity control

Injection molding lead time drivers

When to choose rapid tooling or vacuum casting

3.3 Typical Lead Time by Stage

3.4 Key Risks & Controls

Metal Materials (Machining & Finishing)

Plastic Materials (Molding & Wall Thickness)

Prototype

Low Volume

Production

7.3 Lead Time Benchmarks

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