What CNC tolerances can you achieve?

Standard CNC tolerances are ±0.01mm. Tighter tolerances of ±0.005mm are achievable for critical features with additional inspection. Our quality control includes CMM reports and FAI documentation.

What is your typical CNC lead time?

Prototypes typically ship in 3–7 business days. Low-volume production (10–50 pcs) takes 10–20 days. Full production batches (100+ pcs) take 15–25 days. Rush service is available for urgent orders.

What CNC materials do you work with?

We machine aluminum (6061, 7075), stainless steel (303, 304, 316), titanium (Ti-6Al-4V), carbon steel, brass, copper, Delrin, PEEK, nylon, and other engineering plastics from certified suppliers.

What is your minimum order quantity for CNC parts?

We accept orders starting from 1 piece for prototypes. Production orders are quoted based on volume, with per-part costs decreasing at higher quantities.

Plastic CNC Machining: Delrin vs PEEK vs Nylon vs ABS [2026 Data]

Plastic CNC Machining Guide: Delrin vs PEEK vs Nylon vs ABS vs HDPE Compared (2026)

Quick answer: Delrin (POM) is the best all-around engineering plastic for CNC machining — excellent machinability, low friction, and $5–8/kg. PEEK is the high-performance choice for extreme temperatures (up to 260°C) but costs 10–20x more. Nylon excels in wear applications, ABS is the budget prototyping plastic, and HDPE is the go-to for chemical resistance.

7 Engineering Plastics: Properties Comparison

Plastic	Tensile (MPa)	Max Temp (°C)	Cost/kg	Machinability	Moisture Absorption
Delrin / POM	70	90	$5–8	★★★★★	0.2%
PEEK	100	260	$80–120	★★★☆☆	0.1%
Nylon 6/6	80	95	$3–6	★★★★☆	2.5%
ABS	40	80	$2–4	★★★★★	0.3%
HDPE	30	80	$2–3	★★★☆☆	0.01%
PTFE / Teflon	25	260	$15–25	★☆☆☆☆	0%
Polycarbonate	65	120	$4–7	★★★☆☆	0.15%

Properties are for unfilled grades at room temperature. Glass-filled variants offer higher strength and stiffness but are more abrasive to cutting tools.

Application Match: Which Plastic for Which Job?

Requirement	Best Choice	Why
Gears, bearings, sliding parts	Delrin	Low friction, self-lubricating, dimensionally stable
High-temperature (>150°C)	PEEK	Only engineering plastic rated to 260°C continuous
Wear pads, bushings	Nylon	Excellent abrasion resistance, low cost
Quick prototype, form/fit test	ABS	Cheapest, fastest to machine, good surface finish
Chemical tank, acid environment	HDPE or PTFE	Near-universal chemical resistance
Food contact (FDA)	Delrin or PEEK	FDA-compliant grades available
Transparent / optical	Polycarbonate	Clear, impact-resistant, machinable
Electrical insulator	PTFE or Delrin	High dielectric strength

Cost Comparison: Same Part, Different Plastics

Part: 60×40×20mm Housing	Delrin	Nylon	ABS	PEEK
Material cost (1 pc)	$2.50	$1.50	$1.00	$40.00
Machining time	20 min	22 min	18 min	28 min
Total per part (10 pcs)	$18	$16	$14	$62

Plastic CNC Machining Tips

Avoid sharp corners in plastics — more critical than in metals due to lower stiffness
Plastics expand 3–10x more than metals with temperature — account for thermal expansion in tight fits
Nylon absorbs moisture and swells — not suitable for precision parts in humid environments
PEEK requires carbide tooling and slow speeds — budget 30–50% more machining time vs Delrin
Annealing relieves internal stress — recommended for PEEK and Polycarbonate before final machining

More Material Selection Guides

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