GSN / Insight
Offshore CNC machining is typically 30 to 60 per cent cheaper landed than Australian CNC for medium and high volumes, once tooling, freight and duties are included. That is the headline number. The decision is more interesting than the headline.
We run both. We own and operate an Australian CNC shop and we source overseas every week. The honest framing: offshore wins on cost at scale, local wins on speed, control and small batches. Most engineered programs are a mix.
Cost, what actually drives the gap.
Offshore is not cheaper because the parts are worse. It is cheaper because labour, machine depreciation, energy and raw material in China and parts of South-East Asia are structurally lower. A 5-axis hour in Shenzhen costs a fraction of a 5-axis hour in Sydney, and the same machine brand is often on the floor.
The gap closes once you add freight, customs, GST, defect risk and the management cost of running the offshore program. For very low volumes, that overhead eats the saving. For 50 parts and up, it usually does not.
Lead time, the underrated lever.
Local Australian CNC: 1 to 4 weeks for a typical job, depending on workload. Offshore CNC including 4 to 5 weeks of ocean freight to Sydney: 6 to 10 weeks total. Air freight collapses that to 3 to 4 weeks at significantly higher cost.
If your build schedule does not absorb 8 weeks, offshore is not free even if the unit price is half. The hidden cost is the inventory you have to carry, or the line you have to stop. We model both before you commit.
Quality, where offshore stumbles without help.
The factories themselves are capable. The failure mode is buyer side: weak drawings, no first-article inspection, no in-line QC, no accountability when a shipment lands and parts are out of spec. Offshore CNC done without QC is gambling.
Done with proper QC, FAIR, CMM dimensional reports, EN 10204 3.1 material certs, photo evidence and a buyer who can read a drawing, offshore quality is indistinguishable from local for the vast majority of engineered parts. Most of the prevention happens upstream of QC, in the drawing itself; see our Design for Manufacturing guide for the principles we apply before any PO is raised.
Where local wins outright.
Prototype and pre-production runs where iteration speed beats unit cost. Very low volumes where freight overhead dominates. Parts requiring ITAR or defence-controlled materials. Programs where IP exposure is unacceptable. Anything you need finished, packed and on a customer's loading dock in seven days.
The hybrid that wins most.
Volume offshore. Critical, finishing and assembly onshore. Prototype iterations onshore, then transfer the validated drawing offshore for production. We run this model every day. See our CNC sourcing service or send a drawing for a real cost and lead-time comparison on your part.