The questions that separate a good shop from a wrong fit
Most CNC jobs go wrong not because the shop is bad, but because it was the wrong shop for that part. A wood-routing specialist is not your stainless precision shop; a one-off prototype house is not your 10,000-unit production partner. This checklist helps you match the part to the shop before you commit.
1. Capability — can they actually make your part?
Match four things: process (milling, turning, or both — see milling vs turning), axes (3-axis is plenty for prismatic parts; 5-axis only if your geometry needs it), materials (a shop set up for aluminium may not love titanium), and size envelope (your part must fit their machines). Ask directly: "Have you made parts like this before?"
2. Tolerances and inspection
Can they hold the tolerances your drawing calls out, and can they prove it? Ask whether they have a CMM and whether they can supply an inspection report. For regulated work, ask how they document measurements. If your part is general-purpose, you do not need any of this — do not pay for it.
3. Quality systems and certification
ISO 9001 signals a managed quality process and is common among serious Irish shops. Specific sectors need more: medical devices may require ISO 13485, structural/CE-marked work EN 1090, aerospace AS9100. Only insist on the certifications your application or customer actually requires.
4. Capacity and lead time
A great shop with a full machine queue still means a slow quote. Ask for a realistic lead time and whether they have capacity for your volume — both your prototype now and your production run later. A shop that can grow with you saves you re-qualifying a new supplier mid-project.
5. Communication and DfM input
The best shops push back. If they review your design and suggest a change that cuts cost or improves manufacturability, that is a sign of a partner, not an order-taker. Slow or vague responses at the quote stage rarely improve once you are a customer.
6. Pricing transparency
You want a quote that breaks out setup, per-unit and finishing, so you can see the levers (the cost guide explains them). Be wary of a number with no structure. And always get more than one quote — comparing two or three Irish shops tells you far more than any single price.
Red flags
No physical address or named people. Unwilling to discuss materials or tolerances. A single suspiciously round price with no breakdown. No reviews, portfolio or references. Pressure to commit before you have a drawing reviewed. Reselling your enquiry as a lead without telling you.
A quick scorecard
| Check | Good sign |
|---|---|
| Capability | Has made similar parts; right process, axes, material, size |
| Inspection | CMM available; can supply reports if needed |
| Certification | ISO 9001, plus sector certs you actually require |
| Lead time | Realistic, stated up front, capacity for your volume |
| Communication | Fast, clear, offers DfM input |
| Pricing | Itemised setup / per-unit / finishing |
The shortcut
Comparing shops one by one is slow. Our verified Irish supplier directory lists named, currently-operating shops with their specialties and certifications, and our quote form sends one brief to the suppliers best matched to your part — so you get competing quotes back instead of cold-calling five workshops.
Frequently asked questions
How do I choose a CNC machining shop in Ireland?
Match the part to the shop on capability (process, axes, materials, size), check tolerances and inspection, confirm the certifications your sector needs, verify lead time and capacity, judge communication and DfM input, and require transparent itemised pricing. Always get more than one quote.
What certifications should a CNC shop have?
ISO 9001 is the common baseline for a managed quality process. Specific sectors need more — ISO 13485 for medical devices, EN 1090 for structural CE-marked work, AS9100 for aerospace. Only require the certifications your application actually demands.
What are the warning signs of a bad CNC supplier?
No physical address or named contacts, unwillingness to discuss materials or tolerances, a single round price with no breakdown, no portfolio or references, pressure to commit before a drawing review, and quietly reselling your enquiry as a lead.
Should I get more than one CNC quote?
Yes. Comparing two or three Irish shops reveals fair pricing, lead-time differences and capability fit far better than any single quote. A single quote form that routes to multiple suppliers does this efficiently.
Get competing quotes from Irish shops
Tell us about your part once — material, quantity, tolerances and deadline — and we forward it to the verified Irish suppliers best matched to the job. No paywall, no signup, no hidden lead resale. Start a quote request →