The short answer
Most objections to using a partner come down to one worry: that you are paying someone to do what you could do yourself. Sometimes that is true. The purpose of this guide is to help you work out whether it is true for you.
What "going direct" actually involves
Buying a machined part direct is not one task. It is a chain of them, and each one takes hours that are rarely counted:
- Finding shops that have the right machines, hold your tolerances, work in your material and have capacity this month. The trade still runs largely on word of mouth.
- Getting quotes back. Chasing three shops for a price is a job in itself, and a small enquiry sits at the bottom of a busy shop's pile.
- The second and third supplier. Most parts need finishing, plating, heat treatment or inspection somewhere else. Each handover is a purchase order, a delivery and a phone call.
- Chasing. When a date slips, someone has to notice, ring, and re-plan the downstream steps.
- Checking. Someone has to inspect what arrives and argue the case when it is wrong.
The Make UK/BDO Manufacturing Outlook, Q3 2025 puts the sector's unfilled vacancies at 46,000, costing an estimated four billion pounds of output a year. The person who used to do the buying has often left, and the owner or an engineer has absorbed the job. That is where the real cost of going direct hides: in senior hours that were meant for something else.
What you pay for, either way
There is no free route. The CIPS/Hays Procurement & Supply Salary Guide 2025 puts the average UK procurement and supply salary at £54,576 a year, before on-costs, before the software, and before the years it takes to build a network. A part-time buyer, or an engineer doing it on Friday afternoons, costs less on paper and more in everything that goes late.
With TrueNorth you pay one firm price for the delivered, inspected part. That price covers the sourcing, the handovers, the certificates and the defect liability. You are paying for the service one way or the other. The question is only whether you pay in hours you do not have, or in a price you can see on a quote and compare.
Three routes compared
| What matters | Direct to a machine shop | Online marketplace (Xometry, Geomiq, Fractory) | TrueNorth (Managed Supply) |
|---|---|---|---|
| Who you contract with | The shop | The platform, with a workshop you rarely know | TrueNorth, in its own name |
| Who finds and vets the shop | You | The platform's algorithm | TrueNorth's engineer, per job |
| Multi-process parts | You place and chase each step | Limited; finishing often excluded or subbed blind | One order, handovers owned by TrueNorth |
| Parts with no drawing | Depends on the shop | Not possible; CAD required | Yes, measured and drawn first |
| When it arrives wrong | You negotiate with the shop | Platform claims process | Remade at no charge, in writing on every order |
| Best for | Buyers with time, network and volume | Clean CAD, single process, speed | Small buying teams, multi-process and repeat parts |
Two of those columns are genuinely good options. We wrote a full guide to the UK alternatives to Xometry and another on what separates a manufacturing coordinator from a marketplace, and both say plainly where each route wins.
When going direct is the right answer
We would rather tell you this than have you find out later:
- You have a buyer and a network. If someone in your team already knows six good shops and has the hours to run them, a partner adds a layer you do not need.
- One process, one part, plenty of volume. A production quantity of a single-operation turned part is a machine shop's bread and butter. Go direct, or use a marketplace.
- You want to choose the machine. Some engineers want to stand next to the spindle. A partner selects the shop for you; that is the trade.
Where a partner earns its price is the opposite set: multi-process parts, small quantities, parts with no drawing, repeat batches that must match the first one, and buying teams of one.
What a partner should be able to prove
If you do use one, hold them to this. Ask who you contract with and who pays when parts arrive out of specification. Ask for the guarantee in writing. Ask what the process is when a date is at risk, and how early you hear. Ask whether they place work in China, and get the answer in writing too. TrueNorth's answers are on this site: a right-first-time guarantee printed on every quote, a 48-hour DFM review, one named contact, and no work placed in China. TrueNorth Engineering is working towards ISO 9001; the shops that make your parts are ISO 9001 certified.
Partner or direct: the questions buyers ask
Because sourcing is work: finding shops, getting quotes, placing the finishing and inspection steps, chasing dates and checking parts. Go direct if you have a buyer with the time, a vetted network and the volume to matter to a shop. Use a partner if you do not. TrueNorth quotes one firm price for the delivered, inspected part and carries the defect liability, so the sourcing hours move off your desk.
You pay for the sourcing one way or the other. Done in-house it costs hours, and the CIPS/Hays Salary Guide 2025 puts the average UK procurement salary at £54,576 before on-costs. With TrueNorth it is inside one firm price per part, which you can compare against any other quote. Whether that is more depends on what your own hours are worth and how many parts you buy.
When you already have a buyer and a network of trusted shops, when the part is single-process in production quantities, or when the engineer wants to choose the machine and speak to the machinist. In those cases a partner adds a layer you do not need, and TrueNorth Engineering says so on its own pages.
A marketplace matches your CAD file to a workshop, usually one you never speak to, and sells speed. A sourcing partner such as TrueNorth selects the shop per job, owns the handovers between machining, finishing and inspection, takes title to the parts and carries the liability when they arrive wrong. TrueNorth Engineering is a manufacturing coordinator: we call the model managed supply.
With TrueNorth, TrueNorth is. Every quote carries the right-first-time guarantee: parts that ship non-conforming are remade at no charge. You contract with TrueNorth in its own name, not with the shop, so there is one party to call and one party responsible.