You Have the Part — Not the Drawing
Most machine shops ask for a finished CAD file or a fully dimensioned drawing before they'll even quote. But a lot of real jobs don't start there. They start with a part in your hand: a bushing that finally wore out, a bracket that snapped, a fitting off a machine whose maker no longer exists, or a component you simply can't buy anymore. There's no drawing, no part number, and no supplier left to ask.
That is exactly the job this service is built for. Send EKINSUN the sample — or, for simpler parts, just clear photos — and our engineers turn it into a confirmed CAD model and a finished part. You don't touch CAD software, you don't need the original drawing, and you can order a single piece.
What We Can Reproduce From a Sample
Whatever you're holding, there's a path to a new part. These are the most common situations — each links to a closer guide:
Copy a broken part
A snapped or cracked component, in one or several pieces. We reconstruct it whole and remake it.
How reverse engineering works →Copy a worn part
Bushings, shafts, gears worn past tolerance. We restore the original size, not the worn one.
Custom bushings →From a photo
Can't mail the part? Clear photos plus one known dimension are often enough.
Make a part from a photo →From a hand sketch
You know the sizes but have no drawing. Sketch it; we turn it into proper CAD.
Sketch to part →Discontinued / obsolete
Original maker gone or part no longer sold. We reproduce it from the old one.
Copy an obsolete part →Just measurements
Only key dimensions and what the part does? That can be enough to start.
Order with no CAD →How a Part Gets Made From Your Sample
The work that competitors usually skip over is the part that matters most: how a tired old sample becomes a part that actually fits. Here is the real sequence.
Send the sample or photos
Mail the part, or email photos from several angles with one reference dimension. We confirm what's needed before you ship anything.
Measure & inspect
Digital calipers, micrometers, thread gauges and — for complex geometry — a 3D scan or CMM capture every feature.
Separate wear from design intent
The key step. We read mating faces, symmetry and the part's function to recover the original dimensions, not the worn or damaged ones.
Rebuild the CAD — you confirm
We model the part and send you the drawing with critical dimensions marked. Nothing is cut until you approve it. This is free with your quote.
Match the material
We identify a suitable metal, plastic or silicone — matching the original or suggesting a better option for the part's job.
Manufacture
CNC machining for one-offs and metals, molding or casting for batches and soft parts. CNC turning · vacuum casting.
Inspect & ship
The finished part is checked against the model and against your original sample, then shipped worldwide.
Worn, Broken or Incomplete? That's Normal Here
A worn sample is not a problem — it's the usual starting point. The mistake a cheap copy makes is measuring the part as it is now and reproducing the wear. We don't. A shaft that has run for years is undersized at its bearing journals; a gear tooth may be rounded; a sealing face may be scored. We measure those features, compare them against the unworn areas and the parts they mate with, and reconstruct the size the part had when it was new. If a corner is missing entirely, a photo of the assembly or the mating component usually tells us what belongs there.
Materials We Reproduce In
We pick the material to suit the part's job and, where it helps, suggest an upgrade over the original:
Metal
Aluminium (6061, 7075), stainless (304, 316), brass, bronze, mild and tool steel, titanium — turned and milled to tight tolerance.
6061 →304 →Plastic
Delrin/POM, nylon, PC, PTFE, PEEK — machined from solid for one-offs, or molded/cast for batches without steel tooling.
Vacuum casting →Silicone & rubber
Seals, gaskets, soft covers and flexible components copied from a worn original by molding or casting.
Silicone molding →How Accurate Is the Copy?
Accuracy is about putting the precision where the part needs it. Rather than holding every surface to the same tight number, we tolerance the features that decide whether the part works:
| Feature type | Typical approach |
|---|---|
| Bores, bearing fits, mating faces | Held tight, commonly ±0.02–0.05 mm, to match the assembly |
| Threads | Gauged to the matched standard (metric / UNC / UNF / NPT) |
| General machined dimensions | ±0.05–0.1 mm |
| Cosmetic / non-contact surfaces | Opened up to keep cost sensible |
The goal is a part that drops into the same place and does the same job — not just one that looks like the original.
What to Send Us
You don't need to prepare anything technical. To quote fast, send whatever you have:
- The physical sample, or photos from several angles (include a ruler or caliper in shot if you can)
- One known reference dimension — overall length, a diameter, a bore, or a thread size
- What the part does and where it fits (helps us recover worn dimensions and choose material)
- Quantity — one piece, or a batch
- Original material if you know it (we'll suggest one if not)
- Delivery country
No CAD file? That's the point. Photos, a sketch, rough dimensions or an old sample are all we need to begin. The CAD is our job — created free and confirmed with you before anything is made.
A note on branded parts. When you send a sample, we manufacture a compatible replacement made to its form, fit and function. We don't supply branded original products and don't imply any affiliation with the original manufacturer.
A Real Example
When a customer needed brass fittings with a thread that no current supplier could match, we worked from the sample to recover the exact thread form and reproduce a full suite — see the custom-thread brass fitting case. The same approach reproduces shafts, gears, housings and the rest of the custom parts catalogue.
Frequently Asked Questions
Yes — that's what this service is for. Send the physical part, a photo, or a hand sketch. We measure it, build the CAD for free, confirm the dimensions with you, then make it. You never need CAD software or a finished drawing.
Normal here. We measure the surviving features, then separate the worn dimensions from the original design intent — using the mating parts, symmetry and engineering judgement — so the new part is restored to how it left the factory, not copied at its worn size. If a piece is missing, a photo of the assembly usually lets us reconstruct it.
Both work. For simple parts, clear photos plus one known reference dimension are often enough to quote and build. For tight-tolerance, threaded or complex parts, mailing the sample gives the most accurate result because we measure every feature directly.
One piece, with no setup fee on machined parts. A single replacement or prototype made from your sample is welcome, and we run small to medium batches from the same reconstructed CAD.
Machined parts are typically held to ±0.05–0.1 mm, tighter on fits and threads. We tolerance the interface features precisely and open up cosmetic ones, so the new part fits and functions like the original.
We make a compatible replacement from the sample or drawing you supply. We don't sell branded originals or imply affiliation with the original manufacturer — the result is a part made to your sample's form, fit and function.
You get a quote within 24 hours of us seeing the part or photos. Lead time after approval depends on the part and quantity — a single machined replacement is usually days, not weeks. CAD reconstruction is free with your quote.
Get a Quote From Your Sample
Photo, sketch or sample — all accepted. Engineers reply in 24h.