Subcontract precision machining of complex parts
Sendot Technology takes on subcontract machining of complex parts for industrial buyers — 3- to 5-axis milling and turning of mechanical parts to ±0.05 mm on critical features, with CMM inspection, FAI reports and material certificates under an ISO 9001 quality system, no minimum order, and a quote after engineering review.
What we take on as a subcontract machining partner
- Industrial subcontracting of machined parts — overflow capacity, discontinued lines, and parts your own shop is not set up for
- Complex parts — deep cavities, thin walls, multi-datum housings and features that need 5-axis reach in one clamping
- Mechanical parts — shafts, brackets, housings, manifolds, fixtures and jigs
- Materials: alloy & stainless steel, aluminium, brass, titanium, engineering plastics — 30+ in total
- Tolerance: ±0.05 mm on critical features; tighter on specific dimensions confirmed at quotation
- Quality evidence: CMM inspection reports, First Article Inspection (FAI), material certificates on request
- Volumes: no MOQ — one part, a bridge batch, or repeat low-volume production
Frequently asked questions
Do you take subcontract machining work from other machine shops?
Yes. A large part of our work is subcontract machining for engineering firms and other shops — overflow capacity when your machines are committed, parts that need 5-axis reach you do not have in house, and legacy parts that no longer fit your production mix. You keep the customer relationship; we machine to your drawing and supply the inspection records.
What makes a part 'complex' for subcontract machining?
Usually one of four things: features that cannot be reached without re-fixturing, tolerances that are tight relative to the part size, thin walls or deep cavities that move under cutting load, or several datums that must stay related to each other. All four are cases where 5-axis machining in a single clamping holds accuracy that multiple setups would lose.
Can you work to our drawing and quality system?
Yes. We machine to your drawing, including GD&T callouts, and supply the records your quality system needs — dimensional reports from CMM, FAI reports, and material certificates. Sendot holds ISO 9001; we can supply the documentation an ISO 13485 or IATF 16949 supply chain requires from a machining vendor, but do not hold those certifications ourselves. We do not accept ITAR or export-controlled work.
What is the minimum quantity for subcontract machined parts?
There is no minimum. A single part is a valid order, and the same process scales to repeat low-volume production. CNC samples typically run 3–5 working days.
How fast can you quote a subcontract package?
Within 12 hours of receiving your CAD, including a free DFM review that flags anything likely to raise cost or risk before you commit. Send a STEP file plus a 2D drawing carrying the tolerances that matter.











