Your parts, assembled and tested — not shipped as a kit for someone else to build.

Parts from any process — CNC, injection molded, sheet metal, extruded, off-the-shelf hardware — fastened, wired, tested and kitted into one finished unit. One engineer owns the whole assembly, not just the part they happened to make.

Get my assembly quote →See what's included ↓

Quick definition

Assembly and kitting takes individually manufactured parts — machined, molded, formed, whatever process made them — and combines them into a finished, tested, sellable unit. That can mean fastening a bracket to a housing, wiring a switch into an enclosure, or packing a hardware kit with the right screws and instructions. The output is one line item you can ship or sell, not a box of parts someone else has to put together.

Your BOMParts from any process
CNC bracket
Molded housing
Sheet-metal panel
Hardware kit
assembled + tested
1 finished unitone line item
Any process, one buildparts from CNC, molding, sheet metal or purchased hardware, assembled together
Tested, not just assembledfunctional test before it ships, not just a visual check
One line itema finished, sellable unit instead of a box of parts to assemble yourself
Prototype to productionfrom a single validated assembly to a running kitting line
Hands assembling a multi-part mechanical product from a machined bracket, a molded housing and fasteners
Parts from different processes, fastened together into one build — not shipped loose for you to assemble.
A finished assembly undergoing functional testing on a workbench test fixture
Functionally tested before it ships — not just checked for looks.

Quoted as a product, not as parts

Every marketplace can price your parts. The assembly is where they stop.

Upload a BOM to a manufacturing marketplace and each line gets its own price, its own vendor and its own lead time — the coupled tolerances between mating parts, the commercial hardware, the finishes that have to match and the delivery that has to land together stay your problem. Send the same BOM to OperGo and one engineer quotes, builds and tests it as one product. That's the difference between a supplier you prototype with and a partner you hand the production run to.

Per-part marketplace quoting
  • Your BOM comes back as a stack of per-part prices — the product is nobody's job
  • Mating tolerances checked within each part, never against each other
  • Off-the-shelf fasteners and hardware out of scope, sourced on your own PO
  • Finishes quoted process by process, with nobody matching them across the build
  • Every part on its own lead time — the stack-up problem surfaces on your bench
The OperGo way
  • The whole BOM quoted as one product — one price, one lead time, one line item
  • Tolerance stack-up checked across every mating part, before production
  • Commercial hardware sourced, fit-checked and kitted in the same order
  • Finishes coordinated across processes, so assembled parts actually match
  • One synchronized delivery — assembled, functionally tested and ready to sell

What's included

From loose parts to a finished, tested unit.

Sub-assembly & mechanical assembly

Fastening, pressing, bonding and mechanical joining of parts from any process into one build.

Electromechanical assembly

Wiring, switches, connectors and simple electromechanical integration built into the mechanical assembly.

Functional testing

Each assembly tested against its actual function before it ships — not just inspected for looks.

Kitting

Fasteners, hardware and consumables sourced and packed with the assembly — one kit, not a shopping list.

How much do you need?

Assembly scales with what the product needs to do.

Assembly vs. individual parts

Individual parts are priced and shipped on their own. Assembly goes further: fit, fasteners and function are checked across the whole build, not just within one part.

Assembly vs. packaging →

Assembly builds and tests the product itself. Packaging is what happens after — the box, the label, the manual it ships in. Most orders need both, specified together.

Still figuring out what your build needs?

Send the BOM and an engineer specs the assembly — what gets built, tested and kitted together, and what ships as separate parts.

Assembly & kitting, answered

What's the difference between assembly and kitting?

Assembly means the parts are actually put together — fastened, wired, joined — into a finished unit. Kitting can mean that, or it can mean something lighter: packing the right parts, fasteners and instructions together without joining them, when the end customer assembles it themselves. Your engineer specs which one your product actually needs.

Can you assemble parts that come from different processes?

Yes — that's the default, not an exception. A CNC bracket, an injection-molded housing, a sheet-metal panel and off-the-shelf hardware are routinely built into one assembly under the same quote.

Do you quote an assembly as one line item, or each part separately?

You see the per-part breakdown, but the quote is for the finished, tested unit: mating tolerances checked against each other, commercial hardware included, finishes matched across processes, and everything converging on one delivery date. One price and one lead time for the product — not a stack of part prices you have to reconcile yourself.

Do you test the assembly, or just put it together?

Assemblies are functionally tested against what they're actually supposed to do — not just visually inspected. What 'functional' means is specified with your engineer at quoting, since it depends entirely on the product.

Can you source the fasteners and hardware, or do I need to supply them?

We can source and kit fasteners, inserts and other hardware as part of the same order — one kit, not a separate shopping list you manage yourself.

What if a tolerance stack-up problem shows up during assembly?

That's exactly what checking stack-up across the whole build before production is meant to catch — if two parts from different processes won't fit together as drawn, it gets flagged and corrected before tooling or a production run is committed, not discovered on a bench after everything ships.

Is assembly the same as packaging?

No, though they're often ordered together. Assembly builds and tests the product itself; packaging (the box, insert, label and manual) is what it ships in. Your engineer can spec either or both under the same quote.

What if my product doesn't need full assembly — just kitting?

That's fine — not every product needs joining. Tell your engineer what the end customer actually has to do with the parts, and the assembly and kitting level gets sized to that, not oversold.

Assembly vs. packaging →

What builds the product versus what it ships in — usually both, specified together.

Assembled and kitted, end to end →

A wall bike rack laser-cut, painted, bagged, boxed and palletized — assembly and kitting run as one line.

Define the kit as one reference →

The system half: parts, variants and quantities saved as one orderable assembly code.

Ready? Go.

Get a price an engineer will stand behind.

Send one part or your whole BOM. An engineer reviews it with the shop floor and sends back a real price, a real lead time and free DFM notes.

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