Custom CNC parts
CNC Machined Jigs & Fixtures
Repeatable workholding and inspection tooling built around the part datum scheme.
Direct answer
A useful jig or fixture constrains the workpiece from its functional datums without over-constraining it, provides tool and gauge access, and makes wear items replaceable. FabVector can machine baseplates, nests, locators and clamp components, but the RFQ must define the process step and the repeatability the fixture must support.
Typical applications
- Machining and drilling fixtures
- CMM and inspection nests
- Assembly and bonding fixtures
- End-of-line gauges and test stands
Recommended manufacturing route
- 01
Translate the part datum reference frame into locators, supports and clamps.
- 02
Separate stable base structure from replaceable wear and changeover components.
- 03
Machine locating features in a common setup and add hardened inserts where required.
- 04
Verify fixture coordinates with a master part, gauge or CMM routine defined by the RFQ.
Controls to put on the drawing
| Control | Quote guidance |
|---|---|
| Datum strategy | Use the part drawing datum scheme and avoid clamping across uncontrolled casting or molded surfaces. |
| Access | Leave clearance for cutters, probes, fasteners, chip removal and operator hands. |
| Wear items | Make pins, bushings and contact pads replaceable without re-machining the base. |
| Repeatability proof | Define how many load/unload cycles and which characteristics will be measured. |
Recommended materials
MIC-6 Cast Aluminum Plate
Stable machined baseplates and inspection nests.
Aluminum 6061-T6
Lightweight general fixture structures and change parts.
Alloy Steel 4140
Loaded or wear-resistant locators and clamp components.
POM (Delrin / Acetal)
Non-marring nests and replaceable contact pads.
Related processes
CNC Milling
3- and 4-axis vertical machining for housings, brackets, manifolds and structural parts.
CNC Turning
Live-tooling lathes for shafts, pins, bushings and threaded fittings up to Ø406 mm.
Surface Grinding
Abrasive finishing for flatness, parallelism and tight thickness control on hardened parts.
Prototype Machining
Functional prototypes in production-grade materials, shipped in days with DFM feedback included.
Compatible finishes
Inspection scope to define in the RFQ
- CMM report for locator positions and base datums
- Repeatability study with an agreed master or sample part
- Fit and function check of pins, bushings, clamps and change parts
Related engineering guides
CNC Machined Jigs & Fixtures buyer questions
01What information is needed to quote a custom fixture?
Provide the part model and drawing, the operation performed in the fixture, machine or inspection envelope, datum scheme, clamp preference, loading method, target repeatability and expected production quantity.
02Can fixture design be included?
Engineering support can be reviewed as part of the RFQ, but scope must distinguish build-to-print machining from fixture design, validation and process responsibility.
03How is fixture repeatability validated?
Define a load/unload study using a master or representative part and measure the characteristics the fixture is intended to control. The number of cycles and acceptance limit belong in the RFQ.
04Can hardened drill bushings and locator pins be installed?
Yes when the component standard, fit, orientation and replacement method are specified. Catalog hardware can reduce future maintenance time compared with custom wear components.
Other custom CNC part families
CNC Machined Enclosures & Housings
One-piece housings with controlled datums, sealed interfaces and assembly-ready finishes.
CNC Machined Brackets & Mounts
Structural parts that keep interfaces aligned without carrying unnecessary mass.
CNC Machined Manifolds
Cross-drilled flow paths, clean intersections and sealing geometry controlled as one part.
CNC Machined Shafts & Pins
Turned geometry with bearing fits, threads and runout controlled from a common datum axis.
Have a part in mind?
Upload CAD or drawings. Eligible CNC work gets an instant estimate; other processes move to engineer review. NDA-protected from the first byte.
Start an RFQ