PETG vs PETG-CF
PETG-CF is stiffer and more dimensionally stable than plain PETG, with a matte finish; plain PETG is tougher under impact and prints with a standard brass nozzle. On price, PETG is the cheaper today: an established 1 kg spool costs a median of £14.43 per kg, against £18.34 for PETG-CF. We track 1,354 PETG and 73 PETG-CF listings. The cheapest single listings are £5.63 per kg (PETG) and £12.99 per kg (PETG-CF).
| PETG | PETG-CF | |
|---|---|---|
| Listings tracked | 1,354 | 73 |
| Cheapest per kg today | £5.63 | £12.99 |
| Median per kg today 1 kg spools, 100+ reviews |
£14.43 | £18.34 |
| Ease of printing | Fairly easy: a little harder than PLA, and it strings more | Moderate: a little hotter than PETG, dried first, with a hardened nozzle |
| Heat resistance | Medium: holds up to around 75°C | Medium: much the same as plain PETG |
| Enclosure needed | No | No |
| Typical uses | Functional parts: brackets, hooks, planters and outdoor fittings | Rigid functional parts: tool mounts, jigs and frames |
| Main drawback | Strings more than PLA | Abrasive to brass nozzles, and more brittle than plain PETG |
Prices are per kilogram of filament, with multi-spool bundles counted at their full weight, and are read from Amazon UK several times a day. The median is the middle listing among established 1 kg spools (new, with 100 or more reviews): half cost less per kg, half cost more. Little-known listings are left out of it because they are priced far higher and rarely bought; the listing counts and the cheapest figures cover everything we track.
Which should you buy: PETG or PETG-CF?
Buy plain PETG if the part needs to flex or absorb a knock. Buy PETG-CF if it needs to hold its shape under load, such as tool mounts, jigs and frames, and you have a hardened nozzle fitted. Carbon-fibre grades often come on smaller spools, so compare them by price per kilogram rather than per spool.
The five cheapest PETG listings today
| Product | Material | Weight | Rating | Price | Per kg | Deal |
|---|---|---|---|---|---|---|
 High-Speed Red PETG 3D Printer Filament 1.75mm, Dimentional Accuracy +/-0.02mm |
PETG | 1 kg | 4.0 out of 5 (1,344 Amazon ratings) | £5.63 | £5.63 | Warehouse |
 3DHojor Basic PETG Filament 1.75mm 1kg*4 Bundle-Clear+Geen+Blue+Orange |
PETG | 4 kg | 4.3 out of 5 (5 Amazon ratings) | £22.60 | £5.65 | 27% below |
 ELEGOO Rapid PETG 3D Printer Filament Bundle 1.75mm Yellow/Green 2KG |
PETG | 2 kg | 4.4 out of 5 (4,640 Amazon ratings) | £12.00 | £6.00 | Warehouse · 45% under new |
 TINMORRY PETG 3D Printer Filament Bundle, PETG-ECO Filament 1.75 mm,Rapid PETG |
PETG | 4 kg | 4.6 out of 5 (9 Amazon ratings) | £24.99 | £6.25 | 24% below |
 3DHoJor Basic PETG Filament 1.75mm 1kg*2 Bundle for 3D Printers-2Pack White |
PETG | 2 kg | 4.4 out of 5 (34 Amazon ratings) | £12.85 | £6.43 | 20% below |
All 1,354 PETG listings, ranked by £/kg
The five cheapest PETG-CF listings today
| Product | Material | Weight | Rating | Price | Per kg | Deal |
|---|---|---|---|---|---|---|
 ERYONE Glass Fiber PETG Filament 1.75mm +/- 0.03mm, 3D Printing Filament PETG |
PETG-CF | 1 kg | 4.5 out of 5 (2 Amazon ratings) | £12.99 | £12.99 | 7% below |
 ERYONE PETG Glass Fiber Filament 1.75mm +/-0.03mm, 3D Printer Filament, High S |
PETG-CF | 1 kg | 4.3 out of 5 (428 Amazon ratings) | £12.99 | £12.99 | 7% below |
 kexcelled Glass Fiber PETG GF Filament 1.75mm, 1kg, Light Brown Green |
PETG-CF | 1 kg | 4.2 out of 5 (310 Amazon ratings) | £14.87 | £14.87 | 28% below |
 kexcelled PETG GF Filament, Glass Fiber Reinforced, Macchiato, 1 kg |
PETG-CF | 1 kg | 4.2 out of 5 (307 Amazon ratings) | £15.08 | £15.08 | — |
 kexcelled Glass Fiber PETG GF Filament 1.75mm +/- 0.03mm, 1kg, Pale Blue |
PETG-CF | 1 kg | 4.2 out of 5 (307 Amazon ratings) | £16.14 | £16.14 | 5% below |
All 73 PETG-CF listings, ranked by £/kg
Questions people ask
Is PETG or PETG-CF filament cheaper per kilogram in the UK?
PETG filament is cheaper per kilogram than PETG-CF on Amazon UK in November 2026. Among established 1 kg spools (100 or more reviews) tracked by 3D Printer Deals, the median PETG spool costs 14.43 pounds per kilogram across 419 listings, against 18.34 pounds for PETG-CF across 24. The cheapest single listings are 5.63 pounds per kilogram for PETG and 12.99 pounds for PETG-CF.
Is PETG easier to print than PETG-CF?
Yes, PETG is easier to print than PETG-CF. PETG is a little harder to print than PLA and strings more, but it runs on any printer. PETG-CF prints a little hotter than plain PETG, should be dried first, and needs a hardened nozzle.
Which copes better with heat, PETG or PETG-CF filament?
PETG and PETG-CF cope with about the same heat. PETG holds up to around 75°C. PETG-CF copes with much the same heat as plain PETG, around 75°C.
Do you need an enclosed 3D printer for PETG or PETG-CF?
No, neither PETG nor PETG-CF needs an enclosed 3D printer. PETG does not need an enclosure. PETG-CF does not need an enclosure.
Guides
-
Carbon fibre filament explained: is it worth it?
Carbon fibre filament is ordinary plastic filled with chopped carbon fibres. It prints stiffer and with a matte finish, but not necessarily stronger, and it needs a hardened nozzle.
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Hardened vs brass nozzles: when you actually need one
Abrasive filament destroys brass nozzles fast. Which filaments count, what hardened steel costs you in heat transfer, and when brass is still the right choice.