PET CNC Machining Services

(4967 Customer Review)

Density: 1.38 g/cm³ – lightweight yet stiff for thin-wall designs
Tensile Strength: 70 MPa – supports snap-fits and living hinges
Glass Transition: 78 °C – maintains shape up to 65 °C service
Light Transmittance: 90 % – optical clarity without secondary polishing
Moisture Absorption: < 0.1 % – stable dimensions in humid environments

Description
Materials Available
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PET CNC machining turns high-performance thermoplastic into tight-tolerance parts for packaging, medical, and electronic industries. At Langhe Casting, we combine 5-axis CNC mills, climate-controlled workshops, and material science expertise to deliver Polyethylene Terephthalate components that exceed ASTM & ISO standards.

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Why Designers Choose PET for CNC Machining

Polyethylene Terephthalate balances strength, clarity, and chemical resistance better than most commodity plastics. Its crystalline structure machines predictably, giving designers freedom to create thin walls, snap-fits, and optical surfaces without secondary coatings.

Property	Typical Value	Design Impact
Tensile Strength	70 MPa	Supports living hinges
Glass Transition	78 °C	Stable up to 65 °C service
Transparency	90 % light transmittance	Clear lenses without polishing
Density	1.38 g/cm³	Lightweight yet stiff

Langhe Casting PET CNC Workflow

DFM Review – Our engineers analyze radii, undercuts, and tolerances within 24 h.
5-Axis Programming – Mastercam toolpaths reduce setups and improve surface finish.
Climate Control – 20 ± 1 °C environment prevents PET warpage during long cycle times.
Inline Metrology – CMM checks every 10th part; data feeds back to machine offsets.
Surface Finishing – Vapor polish, bead blast, or optical flame polish as required.

Machining Guidelines: Tips from Our Shop Floor

PET softens quickly. We run sharp carbide inserts at high feed and low RPM to evacuate chips before heat builds. Flood coolant stays at 15 °C to maintain amorphous structure and avoid stress whitening.

Tooling: Single-flute 2 mm end mill for micro features; polished flutes prevent chip weld.
Feeds & Speeds: 400 mm/min feed, 8 000 RPM spindle, 0.2 mm axial depth for wall accuracy.
Fixturing: Vacuum chuck plus low-profile clamps to eliminate vibration on thin walls.

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Surface Finishes Available at Langhe Casting

Finish	Ra (µm)	Application Example
As-Machined	1.6	Functional prototypes
Bead Blast 120#	0.8	Consumer housings
Vapor Polish	0.2	Optical windows
Mirror Polish	0.05	Light guides

Cost Drivers and How We Minimize Them

Material utilization: We nest parts on 600 × 400 mm sheet blanks, cutting waste by 18 %. Cycle time: 5-axis simultaneous machining shortens programs from 45 min to 12 min on average. Inspection: Automated CMM slashes manual QC labor by 30 %.

Industries We Serve

From microfluidic chips in diagnostics to transparent shields in aerospace, Langhe Casting supplies PET parts that meet FDA, USP VI, and RoHS criteria. Typical lot sizes range from 10 prototypes to 50 000 units per year.

Request a Quote Today

Upload your STEP file on our secure portal. Our PET CNC machining specialists will return DFM feedback and pricing within 12 hours. Partner with Langhe Casting—where precision meets speed.