Walk through any Army workshop in Darwin, Townsville or Holsworthy and you will see the same scene: a workbench scattered with small fittings. Antenna bases, radio mounts, document holders, accessory rails, cable bridges and dozens of other brackets that started life as a sole-source spare from an OEM and ended life as a six-week back-order. Vehicle sustainment is dominated by these unglamorous parts, and additive manufacturing has quietly absorbed most of the category over the last five years.
The challenge
Crews at unit level cannot afford to wait a month for a forty-dollar plastic clip that grounds a four-million-dollar platform. The cost of the part is rarely the issue; the cost of the down vehicle, the towed spare and the lost training day is. Across the Bushmaster, Hawkei, Boxer CRV and the M113 legacy fleet the same pattern repeats: hundreds of small fittings, low risk, low value, but mission critical when the radio will not mount or the antenna will not stand.
Our approach
Global3D works with Australian defence SMEs to convert that workload onto printable, locally produced parts. The materials do the heavy lifting. ASA from OzFDM handles UV and thermal cycling for external mounts, glass-fibre nylon takes structural load, and carbon-fibre nylon delivers the stiffness needed for accessory rails where deflection drives weapon-station accuracy. PLA and ABS do not survive a parked cabin in the Top End or a Pilbara turnaround, so they are excluded from this domain entirely.
Design discipline matters as much as material choice. Brackets are drawn for soldiers wearing gloves in the dark, with generous radii to defeat snagging, recessed fasteners, drainage at every internal cavity and witness markings for orientation. Where a fitting carries load that could injure crew if it failed, we substantiate it with finite element analysis, witness coupons and a locked print recipe. None of that engineering rigour is unique to additive; it is the same discipline the original OEM applied.
- Edge radii of 3 millimetres minimum to resist snagging on webbing
- Recessed or captive fasteners compatible with unit-issue tool kits
- Drainage holes at every closed cavity to defeat condensation
- Witness marks for orientation and revision control
- Field-serviceable without specialist tooling or workshop power
The outcome
Units that adopt this workflow report sustainment lead times collapsing from weeks to days, with design files held in a controlled digital catalogue so any future run carries full traceability. Risk has not increased; it has moved from invisible OEM dependence to documented, locally controlled production.
Further reading