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.

Rapid CNC Prototyping: 3-7 Day Turnaround Guide 2026

Rapid CNC Prototyping Guide: Speed, Cost & Best Practices (2026)

The speed formula: A CNC prototype can be produced in 3–7 calendar days if you optimize for speed. The same part with standard workflow takes 10–15 days. The difference comes down to five factors: material choice, tolerance specification, finish requirements, file format, and supplier selection. Master these and you can cut prototype lead time by 50–70%.

Speed Optimization: Same Part, Different Timelines

Optimization Level	Choices	Prototype Timeline	Cost
Maximum Speed	Al 6061, ±0.1mm, as-machined, STEP file	3–5 days	$60
Balanced	Al 6061, ±0.05mm, bead blast, STEP + PDF	7–10 days	$75
Standard	SS 304, ±0.02mm, passivated, STEP + PDF	12–18 days	$120
Slowest	Ti-6Al-4V, ±0.005mm, anodized, STL file	20–30 days	$350

Example: 50×50×20mm bracket. All timelines include material procurement, machining, and basic inspection.

5 Decisions That Control Prototype Speed

Decision	Fastest Choice	Time Saved	Trade-Off
1. Material	Al 6061 (always in stock)	2–5 days vs Ti or PEEK	Lower strength if you need steel/Ti
2. Tolerances	±0.1mm (standard shop tolerance)	1–3 days vs ±0.005mm	Looser fits — fine for form/fit test
3. Surface Finish	As-machined (no post-processing)	2–5 days vs anodize/powder coat	Visible tool marks
4. File Format	STEP (.stp) file with PDF drawing	1–2 days vs STL or incomplete drawings	None — STEP is always best
5. Quantity	1–3 pieces (no fixturing needed)	1–3 days vs 10+ pieces	Higher per-part cost

Real Rapid Prototyping Examples

Project	Part	Speed Choices	Timeline	Cost
Drone prototype	Motor mount (Al 6061)	±0.05mm, as-machined, 5 pcs	5 days	$180 total
Medical device	Surgical guide (SS 304)	±0.02mm, electropolish, 2 pcs	12 days	$320 total
EV charger	Copper bus bar (C110)	±0.1mm, as-machined, 10 pcs	7 days	$250 total
Robotics	Gear blank (4140 steel)	±0.01mm, as-machined, 3 pcs	10 days	$280 total

The Prototype RFQ Template (Copy-Paste)

Send this with your STEP file for the fastest quote:

Hi — requesting rapid prototype quote for [part name].
• Material: [Al 6061-T6 / SS 304 / etc.]
• Quantity: [1–5 pieces]
• Tolerance: [±0.1mm except as noted on drawing]
• Finish: [As-machined — no post-processing]
• Timeline: [Target 5–7 calendar days]
• Files attached: STEP + dimensioned PDF
Please quote with your fastest available lead time.
Thanks!

Rapid CNC Prototyping — 3–7 Day Turnaround

CNC Precision Tech — China CNC machining sourcing and export support partner.