// Problem We Solve

One Broken Part Shouldn't End a Machine

A snapped shaft, a cracked housing, a stripped gear — and no replacement to buy. Send us the pieces. We reconstruct the geometry from the fragments and machine a new part, often stronger where the old one failed.

Works from fragments
Failure point reinforced
Breakdown priority
Quote in 24h

Broken Doesn't Mean Lost

Searching for help with a broken machine component mostly turns up machine-tool rebuilders and repair shops — useful if you want the whole machine overhauled, useless if what you actually need is one new part to replace the one in pieces on the bench. That single-part problem is what this service answers.

The good news: a broken part is still an excellent manufacturing reference. The fragments carry the bores, threads, profiles and mounting faces almost untouched, and the fracture itself tells us where the part was weakest. We measure the pieces, reassemble them digitally, reconstruct whatever material the break destroyed, and machine a new part — to the original geometry, or with the weak point fixed.

Broken part reproduction by EKINSUN — fractured original beside the new machined replacement
Broken parts are often the best starting point: the fracture surface reveals cross-sections that expose wall thickness, bore diameter and material. Left: broken original. Right: new reproduction.

From Fragments to Finished Part

  • Send the pieces — all of them, unrepaired. Loose fragments measure better than a welded or glued reassembly. Photos first if shipping is slow; one known dimension lets us quote immediately.
  • We reconstruct the geometry. Fragments are measured on CMM or 3D scanned, aligned digitally, and the fracture-zone material rebuilt by engineering judgment. Reconstructed dimensions are flagged on the drawing.
  • We read the failure. A fatigue beach-mark, a bent shaft, an overload shear — the fracture pattern says whether this was a freak event or a design weakness that will break the next part too.
  • You approve, we machine. Original spec or reinforced version — your choice, both quoted. Breakdown jobs get express scheduling and courier shipping.

Common Breaks We Reproduce

Snapped shafts

Fatigue at the keyway or shoulder — the classic. Re-machined with proper radii, alloy upgrades available.

Stripped gears

Tooth profile recovered from undamaged teeth; harder material or surface treatment where wear was the cause.

Cracked housings

Cast housings reproduced as machined billet — stronger and porosity-free.

Broken brackets & arms

Bent or snapped levers and mounts, reconstructed to true geometry, not the deformed state.

Sheared pins & studs

Including non-standard threads and shoulders. See custom fasteners.

Cracked plastic parts

Machined or vacuum cast in engineering polymers — no original tooling needed.

Why did it break? Reproducing the part exactly is sometimes the wrong answer — if a sharp internal corner started the crack, the same corner will start the next one. When the fracture shows a design weakness we say so, and quote the reinforced version alongside the exact copy. Same fits, same function, more metal where it matters.

Repair vs Reproduce

RouteMakes sense whenLimits
Weld repairLarge part, simple break, low precisionDistortion, altered metallurgy; precision fits rarely survive
Sleeve / bush the damageLocal wear on an otherwise good partOne-time fix; underlying part keeps aging
Reproduce new (us)Precision part, repeat failure, or no spare existsLead time in days–weeks; one-off costs more than batch

If the part isn't broken yet — just unavailable — see discontinued parts made to order. And if the maker of the machine no longer exists at all, start at manufacturer out of business.

Broken Parts We Have Reproduced

Broken and damaged parts sent to EKINSUN — reproduced from fragments, worn pieces and partial samples:

Iron casting broken part reproduced by EKINSUN from worn sample
Iron casting reproduced from a broken sample — half survived intact, giving all geometry needed. Ductile iron.
Precision shafts reproduced from broken originals by EKINSUN
Shafts reproduced from broken originals — geometry from undamaged sections and mating bores. 316L.
Custom broken part reproductions from machining by EKINSUN
Gearbox set — three of six were broken. The intact examples set geometry for all six.

The Broken Part Is the Asset, Not the Obstacle

The idea behind this page is counter-intuitive — the fragments in your hand carry almost all the geometry, and the fracture itself tells us why the part failed, so a broken original is a better starting point than no original at all. Nobody plans to ship a part in pieces, but the people who do have usually had the same morning. Here is who they are.

// Maintenance Engineer

"A shaft snapped overnight, the line is down, and there's no spare anywhere to buy"

Photograph the pieces against a ruler and send them — we quote within 24 hours and flag it as a breakdown, so the CAD reconstruction and machining jump the queue. Simple turned or milled parts can ship in days, and we'll cut a spare from the same setup so the next 2am call isn't a crisis.

// Reliability / Rotating Equipment Engineer

"This part keeps breaking in the same place — I don't just want another one that fails"

Then the fracture is the useful bit. A fatigue beach-mark off a sharp corner, an overload shear — we read where it started and quote a reinforced version beside the exact copy: a radius where the crack began, billet instead of casting, alloy or heat-treat where plain steel gave up. Same fit, more margin.

// Restorer / Equipment Owner

"The only one in existence is the broken one in my hand, and it's been obsolete for decades"

A broken original is still an excellent pattern — the fragments hold the bores, threads and faces almost untouched. We reassemble them digitally, rebuild what the break destroyed, show you the reconstructed dimensions for sign-off, and machine a single new part. No drawing, no OEM, MOQ 1.

// Service Shop / Equipment Rebuilder

"Customers hand me broken parts and I need a maker who can work from fragments, not drawings"

That is the whole job here. Send the pieces — unrepaired, all of them — and we reconstruct and remanufacture to fit, keep the CAD for the next identical failure, and quote batches when you want shelf stock. You give your customer a fix instead of a shrug.

What People Search For When a Part Breaks

broken machine part replacement reproduce part from broken pieces snapped shaft replacement no drawing make new part from broken one cracked housing reproduction billet machine down broken part urgent stripped gear tooth reproduction reverse engineer broken part part failed no spare available reinforce part at failure point broken casting remanufacture one off broken part MOQ 1 fragments to new part machined sheared pin stud replacement custom breakdown part fast turnaround fatigue crack part redesign stronger

Frequently Asked Questions

Usually yes. Fragments carry nearly all the geometry — fits, threads, profiles — and the fracture faces tell us how it failed. We reassemble the pieces digitally, reconstruct any material lost at the break, and flag reconstructed dimensions on the drawing for your approval before machining.

Often, and we'll recommend it when the break shows a design weakness: a sharp internal corner that started the fatigue crack gets a radius, a cast part becomes machined billet, a plain steel becomes alloy or heat-treated. Same fit and function, more margin at the failure point.

Tell us it's a breakdown when you send photos — we prioritize the quote and the CAD reconstruction, and quote express machining plus courier shipping. Simple turned or milled parts can ship in days. Photos of the pieces with one known dimension are enough to start; the quote comes within 24 hours.

Don't — for measurement, loose pieces are better than a repaired part with weld distortion or glue gaps. Send the fragments as they are, and keep all of them if you can; even small chips from the fracture zone help us reconstruct the original geometry.

Often, yes. Missing pieces from a symmetrical or repeating feature — a gear tooth, a bolt circle — can be reconstructed from the parts that survive. Send everything you have plus photos of the assembly it came from, and we'll tell you honestly at quote stage whether what's left is enough or whether we need one known dimension from the mating part.

Yes. We produce a dimensioned CAD model and drawing from the fragments and send it for your approval before any metal is cut, with reconstructed dimensions clearly flagged. You keep the drawing and we keep the CAD on file — so if it ever breaks again, the replacement is a quick reorder, not another reconstruction.

Machine Down? Send the Pieces.

We reconstruct the part from the fragments and machine a new one — fast. MOQ 1. Quote in 24 hours.

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