Buying CNC and Workshop Machinery at Auction: What to Check Before You Bid

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Key points

• CNC and workshop machinery sells through timed online and live webcast auctions, usually from closures, upgrades and insolvencies.
• The biggest question on a used CNC lot is whether it powers up and the control works; ask for a power-on demonstration.
• Most CNC and industrial machines need a 415V three-phase supply. Check the rating against your workshop before you bid.
• Removal is the buyer's cost: decommission, rig, transport and recommission, and it can rival the premium on a heavy machine.
• Bid on the delivered, installed cost (hammer plus premium, VAT, rigging and transport). Most machine tools are VAT-qualifying.

Quick answer

CNC and workshop machinery sells through timed online and live webcast auctions, usually from business closures, upgrades and insolvencies. Before you bid, confirm the machine powers up and the control works, check the spindle, ways and tooling, and check the power supply it needs. The bigger question is removal: heavy machines must be decommissioned, rigged and transported, and that cost is the buyer's. Budget the hammer price plus premium, VAT, rigging and transport.

Where do CNC and workshop machines sell at auction?

Most machine tools and workshop equipment sell through timed online and live webcast auctions, catalogued in advance and open to bidders across the UK and overseas. They usually come from engineering firms closing, upgrading or being wound up, so a sale is often the whole contents of a workshop offered lot by lot rather than a single machine.

Machine tools sit within our plant and machinery sales, alongside excavators, forklifts and workshop plant, and they draw manufacturers, subcontract machinists, fabricators and toolmakers. We catalogue each machine on-site, so the listing reflects it as it stands, and bidding is open online so you are not limited to whoever can attend the viewing. You can see current lots on our plant machinery auctions page, and the end-to-end process is covered in our guide to buying plant and machinery at auction.

What types of workshop and machine-tool equipment come up?

Auctions cover the full workshop: CNC machining centres and CNC lathes, manual lathes, mills and grinders, sheet-metal machinery such as press brakes and guillotines, plus saws, presses, welders and compressors. Each type suits a different job and carries its value differently, so start from the work you do, then match the lot to it.

• CNC machining centre (VMC/HMC). Typical use: Milling, drilling, tapping to a program. What most affects value: Control age, spindle hours, whether it powers up, tooling.
• CNC lathe / turning centre. Typical use: Turned components in volume. What most affects value: Control, chuck and collets, bar feeder, spindle condition.
• Manual lathe and mill. Typical use: One-offs, repairs, toolroom work. What most affects value: Ways and slide wear, backlash, tooling and chucks.
• Surface / cylindrical grinder. Typical use: Finishing to close tolerance. What most affects value: Spindle, ways, wheel condition, accuracy.
• Press brake and guillotine. Typical use: Sheet-metal bending and cutting. What most affects value: Tonnage, back-gauge, tooling, control.
• Saws, presses, welders, compressors. Typical use: General fabrication and support. What most affects value: Condition, hours, single or three-phase supply.

CNC value hinges on the control and whether the machine runs; a manual machine is simpler, and value sits in the slides, the spindle and the tooling that comes with it. Decide which you are buying before you read the lot.

Where do auction machine tools come from?

Most auction machine tools come from business closures and insolvency, from firms upgrading to newer machines, and from workshop clearances and relocations. The source shapes what to expect: an upgrade sale often means a sound working machine sold to make space, while an insolvency lot is a machine sold quickly to realise value for creditors. We state the provenance in the catalogue where we have it.

• Closures and insolvency. The contents of a workshop sold to realise value, often at keen prices on working machines. We explain that process in liquidation and insolvency auctions explained.
• Upgrades. Firms moving to newer or faster machines sell the outgoing ones, which are frequently still capable.
• Relocations and clearances. Machines sold because a workshop is moving or reducing, not because they are worn out.
• Ex-college and training. Lightly used machines from education, though sometimes older controls.

A well-kept machine from an upgrade can be a better buy than a cheap one from a hard-run shop, so read the provenance next to the condition, not the price alone.

What should you check on a used CNC machine before bidding?

Check that the machine powers up and the control boots without alarms, that the spindle runs and the axes move, and that the ways, slides and spindle are not visibly worn. Confirm what tooling, chucks, collets and fixtures are included, and note the control type and its age. Machines are sold as seen, so ask for a power-on demonstration at the viewing; a machine that will not power up is a much bigger risk than one you have seen run.

Whether the machine powers up and the control works is the single biggest question on a used CNC lot.

• Power-on and control. What to check: Boots without alarms, screen and inputs work, control type and age. Why it matters: Control faults and obsolete electronics are the hardest and dearest to fix.
• Spindle. What to check: Runs smoothly, no noise or play, hours if known. Why it matters: A spindle rebuild is a major cost.
• Ways and slides. What to check: Wear, scoring, backlash on the axes. Why it matters: Worn ways mean lost accuracy that is expensive to restore.
• Tooling and accessories. What to check: Chuck, collets, toolholders, fixtures, tailstock, listed in the lot. Why it matters: Tooling is costly to replace and is not always included.
• Coolant, guarding, ancillaries. What to check: Pumps, guards, chip conveyor, transformer. Why it matters: Missing ancillaries add cost and delay before you can run work.
• Documentation. What to check: Manuals, programs, service and calibration records. Why it matters: History and manuals ease recommissioning and support.

Three-phase power: will the machine run in your workshop?

Most CNC and industrial machine tools need a 415-volt three-phase supply, not the single-phase supply of a small workshop or domestic unit. Before you bid, confirm the machine's supply and full-load rating and check your workshop can provide it, or budget for a three-phase supply or a phase converter. A machine you cannot power is a machine you cannot use, so this is a before-you-bid question, not an after.

Check the rating plate for voltage, phases and full-load current, and compare it with what your incoming supply and distribution board can deliver. Many small fabrication and toolroom machines run on single-phase, but machining centres, larger lathes and press brakes usually do not. Where three-phase is not available, a static or rotary phase converter can run some machines, but it must be sized correctly and is not right for every machine, so price it in and take advice before the sale rather than after you have won the lot.

How do you get the machine out? Rigging, removal and transport

Removal is the buyer's responsibility and, on a heavy machine, it is a real cost. The machine must be decommissioned and disconnected, rigged and lifted onto transport by people equipped for the weight, moved to your site, then set down, levelled and recommissioned. Plan and price this before you bid, because on a multi-tonne machine the removal can rival the buyer's premium, and you must clear the lot within the removal window.

Plan removal before you bid: decommission, rig and lift, then transport.

• Decommission. Safe electrical disconnection by a competent person, drain coolant and fluids, and secure moving parts for transport.
• Rig and lift. A heavy machine needs proper lifting by forklift, crane or machinery movers, with the floor loading and access checked at both ends.
• Transport. A suitable low-loader or flatbed, secured for the weight, with access to your site confirmed in advance.
• Recommission. Set down, level, connect the supply, and test before you run production work.

We arrange collection UK-wide from our London base and can point you to the practicalities, but the removal itself is booked and paid by the buyer. Confirm access, doorway and floor loading at your end before you commit, and factor a rigger's day rate into your maximum bid on anything heavy.

How do you bid on a machine, step by step?

You register with the auctioneer, clear any identity check or refundable deposit, inspect the machine or read the condition report, then bid by leaving a maximum (proxy) bid or bidding live as the lot closes. If you win, you pay in full before collection, usually by bank transfer within a set number of working days, then arrange decommissioning and removal within the removal window.

1. Register. Create an account, confirm your details and accept the sale terms.
2. Inspect. View on the open day or study the catalogue and condition report, ask for a power-on demonstration, and check the rating plate for the supply the machine needs.
3. Set your maximum bid. Enter the most you will pay, including rigging, transport and any recommissioning, and let the platform bid up to it.
4. Pay and remove. Pay in full, then book decommissioning, rigging and transport within the removal window. We arrange collection UK-wide from our London base.

What does a winning bid on a machine actually cost?

The hammer price is only part of it. A buyer's premium of roughly 15 to 20 percent is added, VAT applies to the premium and usually to the hammer price, and on a heavy machine you also pay for rigging, removal and transport. Most machine tools are VAT-qualifying, so a VAT-registered buyer can usually reclaim the VAT. Work out the all-in cost, including removal, before you set your maximum bid.

Illustrative worked example. Premium, VAT and removal costs vary by sale, lot and machine weight.

In the example above, an £8,000 hammer price on a CNC machining centre becomes roughly £11,540 all-in once a 15 percent buyer's premium, VAT on that premium, and rigging and transport are included. Removal is the swing factor: it is modest on a bench machine and substantial on a multi-tonne one. Bid on the delivered, installed cost, not the headline hammer price, and the saving over a dealer's recommissioned machine is where the value sits.

Can you buy machine tools at auction to export?

Yes. We are EORI registered and set up for export to overseas trade buyers. On an export lot the VAT is taken as a refundable deposit and returned once you provide valid evidence of export within the time limit in our terms; VAT on the buyer's premium is not refundable. Online bidding means an overseas buyer can win a UK machine without attending, though the buyer still arranges rigging and export transport.

UK machine tools with a known history and a working control travel well, and export demand puts overseas buyers on the same lots as domestic shops. If you are exporting, tell us before the sale so we can confirm the documentation and the deposit-and-refund process, and plan the heavier logistics that an export move involves.

Common mistakes to avoid

• Not confirming it powers up. A CNC machine that will not boot is a gamble. Get a power-on demonstration or read the condition report closely.
• Forgetting the power supply. Most machines need three-phase. Check the rating against your workshop before you bid, not after.
• Underestimating removal. Rigging, transport and recommissioning are real money on a heavy machine. Price them into your maximum bid.
• Assuming tooling is included. Chucks, collets and fixtures are costly and are not always in the lot. Check what you are getting.
• Missing the removal window. Machines must be cleared by the deadline. Book your rigger and transport before you win, not after.

Frequently asked questions

What should I check first on a used CNC machine?

Whether it powers up and the control boots without alarms. A working control and a running spindle are the hardest and dearest things to put right, so a machine you have seen power on is a far lower risk than one that will not boot. Then check the spindle, the ways and slides for wear, the tooling included, and the control type and age.

Do CNC machines need a three-phase power supply?

Usually, yes. Most CNC and larger industrial machine tools need a 415-volt three-phase supply, not single-phase. Check the machine's rating plate for voltage, phases and full-load current, and confirm your workshop can supply it before you bid. Where three-phase is not available, a correctly sized phase converter can run some machines, but not all.

Who pays to move the machine after the sale?

The buyer. Removal is your responsibility and your cost: the machine must be decommissioned, rigged and lifted, transported and recommissioned, and it must be cleared within the removal window. On a multi-tonne machine that can rival the buyer's premium, so price rigging and transport into your maximum bid.

Is the tooling included with a machine tool lot?

Not always. Chucks, collets, toolholders, fixtures and tailstocks are costly to replace and are not automatically part of the lot, so check the catalogue for exactly what is included. Tooling that comes with the machine adds real value; a machine sold bare may need a significant spend before it earns.

Can I reclaim the VAT on a machine bought at auction?

Usually, yes. Most machine tools are sold plus VAT and are VAT-qualifying, so a VAT-registered buyer can normally reclaim the VAT in the normal way. Always check each lot's VAT status, because it changes your real cost and what you can recover.

Can I buy machine tools at auction to export?

Yes. We are EORI registered and set up for export. On an export lot the VAT is taken as a refundable deposit and returned once you provide valid evidence of export within the time limit in our terms; VAT on the buyer's premium is not refundable. Tell us before the sale so we can confirm the documentation and plan the heavier logistics.

Sources and references

1. Providing and using work equipment safely (PUWER) · HSE, 2026 https://www.hse.gov.uk/work-equipment-machinery/puwer.htm
2. VAT margin schemes (how VAT is charged on second-hand goods) · GOV.UK / HMRC, 2026 https://www.gov.uk/vat-margin-schemes
3. Get an EORI number · GOV.UK, 2026 https://www.gov.uk/eori

We run online auctions of CNC and workshop machinery, plant, ex-fleet vehicles and business assets across the UK, catalogued on-site and open to bidders anywhere. EORI registered and export-ready for overseas trade buyers.

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Universal Auctions Group · EORI registered and export-ready · on-site cataloguing, UK-wide collection. This article is general information for trade buyers and sellers and is not financial, tax or legal advice.