Machining & Engineering in Mount Isa
Precision machining and component manufacturing for industrial applications — shafts, flanges, bushings and custom parts.
Engineered components, machined to spec
Humpty Doo Welding and Fabrication delivers machining & engineering across Mount Isa and Queensland. Mount Isa's underground mines and smelters need hardfacing, machining and structural maintenance that keeps production running. We mobilise from our Humpty Doo base with fully-equipped rigs, bringing the same coded welding and fabrication standards to Mount Isa that we are known for Territory-wide.
Our machine shop turns, mills, bores and drills steel and alloy components to precise tolerances — shafts, flanges, bushings, pins and bespoke parts. We recondition worn components and reverse-engineer obsolete parts to keep your plant running.
From a single breakdown component to a batch production run, work is delivered to spec with fast turnaround when you're down. Pair it with our fabrication and welding for a complete engineered solution.
What we deliver
Precision turning, milling, boring and drilling
Shafts, flanges, bushings, pins and custom components
Component reconditioning and build-up
Reverse engineering and one-off part manufacture
Batch machining for repeat production
Fast turnaround on breakdown components
How we work
Brief & quote
Send drawings, a sample or a description — we scope the work and get a quote back to you fast.
Program & set up
We program the machines, prepare material and set up tooling for your job.
Machine & fabricate
Work is cut, machined, formed and welded in-house to spec and tolerance.
Inspect & deliver
Parts are checked against spec, finished and made ready for pickup or delivery.
Welding & fabrication in Mount Isa, QLD
Mount Isa is north-west Queensland's mining city, built on copper, zinc, lead and silver mines and the smelters that process them. Underground and surface operations here run heavy plant that lives or dies on its wear components and structural integrity.
We mobilise machining, hardfacing and structural-repair capacity to the Isa for planned maintenance and breakdowns. Keeping production moving means components built to spec and repairs that hold under constant load.
Machining & Engineering projects on the ground
Other services in Mount Isa
Ready to start your machining project in Mount Isa?
Talk to a Territory-proud team that turns up, does the job right and stands behind the weld. No job too big or too small.







