Circular saw blade for aluminium extrusion
Updated: October 2026
You are docking fascia, soffit, or a window and door profile, and the offcut is a thin aluminium wall that can snatch if it moves. A circular saw blade for aluminium extrusion is the carbide blade sold for aluminium and other non-ferrous metal, often plastic as well. The edge you want is a clean docking cut, not a steel-tube review scored as the same job. The [circular saw blade for aluminium comparison](/hub/saw-accessories/circular-saw-blade-for-aluminium) is the table of eleven amazon.co.uk listings. This is the Products Compared editorial team. We used those UK listings and public maker guides, not a lab, and a qualifying purchase can earn a commission at no extra cost to you.
You are docking fascia, soffit, or a window and door profile, and the offcut is a thin aluminium wall that can snatch if it moves.
You are docking fascia, soffit, or a window and door profile, and the offcut is a thin aluminium wall that can snatch if it moves. A circular saw blade for aluminium extrusion is the carbide blade sold for aluminium and other non-ferrous metal, often plastic as well. The edge you want is a clean docking cut, not a steel-tube review scored as the same job. The circular saw blade for aluminium comparison is the table of eleven amazon.co.uk listings. This is the Products Compared editorial team. We used those UK listings and public maker guides, not a lab, and a qualifying purchase can earn a commission at no extra cost to you.
Our top picks
| Badge | Product | Diameter | Tooth form | Maximum speed | Note | Price | Offer |
|---|---|---|---|---|---|---|---|
| Best overall |  Trend Trend CSB/AP21072 210 mm 72T | 210 mm, 30 mm bore | 72 teeth, −6° hook | Not printed | 6.7 | about £21.75 | View offer |
| Alternative |  BRSCHNITT BRSCHNITT 305 mm 100T TCG aluminium blade | 305 mm, 30 mm bore | 100 TCG, washer not listed | 4,500 rpm | 4.9 | about £28.99 | View offer |
| Alternative |  FOCSTOL FOCSTOL 305 mm 100T TCG | 305 mm, 30 mm bore | 100 TCG, washer included | 4,500 rpm | 7.2 | about £29.99 | View offer |
On this page
What counts as an extrusion cut
Fascia, soffit, window and door profile, tile trim and thin sheet are the cuts this page means. The section is hollow or thin-walled, and the teeth can grab the offcut if it vibrates. You need a square end, not a blade reviewed on 40 mm steel box. Knotwood’s UK guide, June 2025, docks their cladding on a compound mitre saw. A steel-tube comment does not tell you the edge on a powder-coated soffit.
What the blade should name
Buy a blade whose materials sentence names aluminium, and usually plastic. FOCSTOL includes a 30 mm to 25.4 mm washer, and one UK review mentions aluminium skirting. The 305 mm BRSCHNITT’s review lines are German, so they are not a UK account of a fascia edge. Trend’s 210 mm blade names aluminium and plastic and prints a −6° hook. They still have to fit the saw. BAUBECK’s UK reviews are timber, and a steel-tube review is not a finish score for soffit.
Teeth and rake, without one UK rule
Knotwood asks for at least 60 teeth and a negative rake on their cladding, with a clamp, wax and a slow feed. Sixty teeth is their recommendation, not a UK law. Trend’s trade page for the CSB/AP26096, a 260 mm blade at £120.36, prints TCG, a −6° hook, and fascia and soffit by name. That blade is not in this comparison. The 140 mm Trend has 42 teeth, under Knotwood’s 60, on a plate aimed at compact saws.
Addison Saws describes the opposite rake: a positive rake and deeper gullets, because a fine steel pitch loads up on a sticky aluminium chip. A negative hook is not the only figure in print, and Addison is not the law either. If the listing prints −6°, that is Trend’s figure for those two ASINs. BS EN 847-1 does not certify these blades for aluminium.
Support, wax, and the saw you already own
Thin wall snatches. Clamp the fascia to the fence, and support the offcut so it cannot fall into the teeth. Electrical Safety First’s advice is to clamp the work, and to use a blade whose rpm rating is higher than the speed the saw can produce. Wax goes on a stationary blade. The full sequence is on the how to cut aluminium page. A hand-held circular saw can grab the section. Docking on a mitre saw is the setup that matches a fascia length.
Diameter, bore and rpm stay on the buying guide. A 165 mm cordless saw needs a plate near that diameter and a 20 mm bore. The 305 mm blades are the wrong size for that machine. A 210 mm Trend needs a 30 mm arbor, and the file has no speed ceiling and no ring.
Which listing, and when to stop
Use the two 305 mm blades only if the saw is built for 305 mm and a 30 mm bore and can stay under 4,500 rpm. FOCSTOL is the one with a washer and a UK sentence about aluminium skirting. Trend’s 210 mm blade names aluminium and plastic and prints the hook, if you accept the missing rpm. None of these is a 165 mm cordless blade. For that saw, the best blade page assigns the Saxton, the METAK and the BATIOPV under different rules. Evolution’s aluminium blades, roughly £44 to £80, are other products when this table’s gaps are ones you will not accept.
Stop and call a fabricator for structural aluminium, solid steel, a workplace saw you have not been trained on, or a hand-held cut on a section that can snatch. A clamped docking cut on a mitre saw, with a blade that names aluminium and a speed you can keep, is the DIY case this page is for.
Common questions
Can you cut aluminium fascia with a circular saw blade?
Yes, if the blade names aluminium, the saw can take that diameter and bore, and you clamp the length. Knotwood’s UK guide uses a compound mitre saw for docking cladding. A hand-held circular saw can grab a thin wall, so it is a poor choice for a long fascia rip. Support the offcut, and wax a blade that has stopped.
Is a negative rake required for soffit and window profile?
Knotwood and Trend print a negative rake or a −6° hook for cladding, fascia and plastic. Addison specifies a positive rake so the chip clears on their non-ferrous saws. You do not have a single UK rule. Follow the hook the listing prints, and do not treat either maker as a certificate for the eleven amazon.co.uk plates in this comparison.
Will a blade that also says steel cut fascia cleanly?
It might cut the profile. The UK reviews on Saxton, the 165 mm BRSCHNITT, EXFEIN and BATIOPV are mostly tube, sheet and bar, not a measured fascia edge. Those blades also carry lower rpm ceilings, down to BATIOPV’s 2,800 rpm bullet. Prefer a listing that names aluminium and plastic when the finish on thin wall is the point.
Do the 305 mm, 100-tooth blades fit a 165 mm cordless saw?
No. They are 305 mm with a 30 mm bore and a 4,500 rpm maximum, at £28.99 and £29.99. A 165 mm cordless saw needs a plate near 160–165 mm and, typically, a 20 mm bore, with a maximum rpm above that saw. Forcing a 305 mm blade under a smaller guard is the wrong fix.
When should you stop and call a professional?
Stop if the section can snatch and you only have a hand-held saw, if the plate is cracked, or if the work is structural. Solid steel and a saw you have not been trained to use belong with someone who cuts that metal for a living. A short, clamped mitre-saw cut on fascia, with a blade that names aluminium and a speed under the marked maximum, is the job you can keep.
Related pages
Sources
Public UK sources used for this comparison. Listing prices, stars, and review counts are from amazon.co.uk extracts dated 16 October 2026.
- PUWER 1998, regulation 11 — guarding duty for employers (retrieved 16 October 2026)
- HSE EIS12 — pivoting-head metal-cutting circular saws (retrieved 16 October 2026)
- HSE WIS16 — circular saw benches (retrieved 16 October 2026)
- BS EN 847-1:2017 — tools for woodworking, circular saw blades (retrieved 16 October 2026)
- Knotwood UK cutting, storage and handling guide (June 2025) (retrieved 16 October 2026)
- Trend aluminium and plastic blade range (retrieved 16 October 2026)
- Addison Saws — why aluminium loads a blade (retrieved 16 October 2026)
- Electrical Safety First — circular saws (retrieved 16 October 2026)