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Milling cutter set: choose the family and the shank

Updated: October 2026

You searched for a milling cutter set and amazon.co.uk mixed three jobs: a slot in aluminium on a small mill, a profile in ply on a desktop CNC, and a door frame on a plunge router. Those cutters are not substitutes, so you decide the family and the shank before you compare prices. Peter F. updated this on 21 October 2026 from the UK listings in this comparison and notes from Trend, Protool, Machine Mart, and the Health and Safety Executive. There was no workshop test. A qualifying purchase can earn a commission at no extra cost to you. Prices sit on the [milling cutter set comparison](/hub/routers/milling-cutter-set).

You searched for a milling cutter set and amazon.co.uk mixed three jobs: a slot in aluminium on a small mill, a profile in ply on a desktop CNC, and a door frame on a plunge router.

Our top picks

AFUNTA AFUNTA 10-piece HSS end mill set, 2-12 mm

Best overall

AFUNTA AFUNTA 10-piece HSS end mill set, 2-12 mm
9.0/10about £16.99
View offer
EU_HOZLY Hozly 5-pack 1/8 inch downcut O-flute, carbide

Rank 2

EU_HOZLY Hozly 5-pack 1/8 inch downcut O-flute, carbide
8.8/10about £16.99
View offer
Socoje Socoje 2-piece rail and stile set, 1/2 inch

Rank 3

Socoje Socoje 2-piece rail and stile set, 1/2 inch
0.0/10about £21.99
View offer
On this page
  1. 1.Three tools under one name
  2. 2.Match the shank, not the cutting diameter
  3. 3.What the £14 sets leave out
  4. 4.Wood dust if you are routing at work

Three tools under one name

A milling cutter set in this search is metric end mills for a mill, small-shank bits for a desktop CNC, or a rail-and-stile pair for a handheld router. Packs from about £14 to £17 are high-speed-steel end mills for a holder that matches each shank. A door set will not mill a pocket in metal, and an end mill will not raise a panel. If the machine is not a mill, that price is the wrong shelf. Five carbide downcuts on a 3.175 mm shank repeat one profile. An eight-piece 1/4 inch mixed set fails if the spindle only holds 3.175 mm. A carbon-steel rail-and-stile pair uses a 1/2 inch shank. A mill takes the HSS family, a desktop CNC takes the shank already in the spindle, and a door frame takes the 1/2 inch pair. The desktop CNC guide separates those bits from mill end mills.

Match the shank, not the cutting diameter

Match the shank to the collet, not the width of the cut. Trend states that a 1/4 inch collet is 6.35 mm, not 6 mm, which is why a 6 mm shank must not go into a 1/4 inch router collet. Protool makes the same point for milling collets: you clamp the shank, and 1/2 inch is 12.7 mm, not 13 mm and not 12 mm. A title that prints 6 mm (1/4 inch) is mixing two sizes, so measure the shank with a calliper. A 10 mm cutter from a 2–12 mm set shows the miss. The cutting diameter is 10 mm, and the shank is often 10 mm too, so neither a 6.35 mm nor a 12.7 mm router collet will clamp it. Desktop machines here use 3.175 mm or 1/4 inch, so a metric mill set still fails them.
AFUNTA AFUNTA 10-piece HSS end mill set, 2-12 mm

Testsieger

AFUNTA AFUNTA 10-piece HSS end mill set, 2-12 mm
9.0/10about £16.99
View offer

What the £14 sets leave out

The HSS sets here run from £13.99 to £16.99 for eight or ten sizes. They suit light cuts in aluminium better than the longest material list in the bullets, and reviews around 4.4 to 4.5 mostly support that lighter work. Only one listing names a grade, HSS4241. An unnamed pack is not M2, and a line that prints both HSS and tungsten steel is a conflict, not a carbide upgrade. Compared with Clarke’s ET163 at £88.79 including VAT from Machine Mart, those boxes omit a stated mix of two-flute slot drills and four-flute end mills. Clarke is context, not a listing here. A four-flute end mill is a weak plunge tool unless the page states centre cutting, and only one cheap set does. See the HSS or carbide page for that split, and the best sets page once the family is clear.

Wood dust if you are routing at work

If the set will cut wood where people are employed, the limit is dust, not which box has more pieces. The Health and Safety Executive sets workplace exposure limits of 3 mg/m³ for hardwood dust, 5 mg/m³ for softwood dust, and 3 mg/m³ for a mixture. Extraction on the router is the control that guidance points to. A home workshop is a different setting from staff on a shift. At work, the Provision and Use of Work Equipment Regulations expect suitable tooling, including a shank that matches the collet. If the machine is unassessed, the collet is damaged, or the joinery is fire-resisting, bring in a competent person.

Common questions

Will a 2–12 mm set fit my plunge router?
A 2–12 mm end-mill set will not fit a typical UK plunge router as a set. Common collets are 1/4 inch (6.35 mm) and 1/2 inch (12.7 mm). Most sizes use a shank that steps with the cutting diameter, so a 10 mm cutter is not a 6.35 mm bit and a 12 mm cutter is not 12.7 mm. You would be forcing the wrong shank into the collet.
Is 6 mm the same as 1/4 inch?
No. A 1/4 inch collet is 6.35 mm, not 6 mm, so a 6 mm shank must not be closed in it. The collet cannot grip a full circle, and the cutter can slip. The same gap appears where 1/2 inch is 12.7 mm, not 12 mm. If a title equates the two, measure the shank rather than the cutting diameter.
Do I need two-flute slot drills as well as four-flute end mills?
You need a two-flute slot drill when you plunge into solid metal. A four-flute end mill suits side cutting once a path exists, unless that listing states centre cutting. One HSS set here does state it, and the others do not. A four-flute-only box still leaves the plunge to a separate cutter. Clarke’s ET163, at £88.79 including VAT, includes both and is Machine Mart context, not a listing here.
Which shank does a rail-and-stile set use?
The rail-and-stile pair in this comparison uses a 1/2 inch shank, 12.7 mm, listed at £21.99 in carbon steel. A router with only a 1/4 inch collet cannot hold it. Other door sets exist in 1/4 inch, so you still read the shank on the listing you open. The pair is for frame joinery, not for an end mill or a 3.175 mm CNC downcut.
What collet does a 3018-style CNC usually have?
Desktop CNC bits in this comparison are 3.175 mm or 1/4 inch, so those are the shanks to check on a 3018-style spindle. Read the collet in the box, not the frame size. A 3.175 mm collet will not hold the £93.99 1/4 inch set, and a 1/4 inch collet will not hold the five 3.175 mm downcuts. A metric 2–12 mm end-mill set fits neither of them.

Related pages

Router collet sizes

Milling cutter set

Best end mill set UK: who each amazon listing is for

CNC router bit set for a 3.175 mm or 1/4 inch collet

How to use an end mill: tip, collet, and first chip

HSS or carbide end mill: which one suits your mill

Sources

Public UK and manufacturer sources from the research digest, October 2026.

  1. HSE — Wood dust (retrieved 21.10.2026)
  2. HSE — WD5 Routers (retrieved 21.10.2026)
  3. HSE — WIS22 (retrieved 21.10.2026)
  4. HSE — High-speed router (retrieved 21.10.2026)
  5. BSI — BS EN 847-1:2017 (retrieved 21.10.2026)
  6. BSI — BS EN 847-2:2017 (retrieved 21.10.2026)
  7. Trend — Routing FAQ (retrieved 21.10.2026)
  8. Model Engineer — End mill versus slot drill (retrieved 21.10.2026)
  9. Machine Mart — Clarke ET163 (retrieved 21.10.2026)