How long does a brass nozzle last?

A brass nozzle printing standard PLA or PETG lasts approximately 400-600 hours. With abrasive filaments like carbon fibre or glow-in-the-dark, it can wear out in as little as 50-100 hours. Check for under-extrusion as a wear indicator.

When should I switch to a hardened steel nozzle?

Switch to hardened steel if you regularly print abrasive filaments (carbon fibre, glass fibre, glow-in-the-dark, wood or metal fill). Hardened steel lasts 5-10x longer with abrasives but conducts heat slightly less efficiently.

How do I know if my nozzle is worn?

Signs of nozzle wear include: under-extrusion, inconsistent extrusion width, poor first layer despite correct Z-offset, stringing that was not present before, and visible enlargement of the nozzle opening when inspected.

Do ruby-tipped nozzles last forever?

Practically, with abrasive filaments, yes. The Olsson Ruby showed zero measurable wear even under a microscope after extruding 8 kg of carbon-fibre filament, because the tip is an aluminium-oxide gemstone rather than a coating that can rub off. This calculator therefore treats a ruby tip as immune to abrasive wear, so its estimated life matches its base figure regardless of filament. They are expensive and best for heavy users of carbon-fibre, glass-fibre or metal-fill, and the ruby tip can chip if the nozzle crashes into the bed.

3DPrintCalcs

Nozzle Wear Calculator — Estimate Nozzle Lifespan

Estimate nozzle lifespan based on material type and print hours.

Print Hours Used

Total hours on this nozzle

Nozzle Cost

Price you paid in £ (brass ~£2-5, hardened steel ~£8-15, ruby ~£60-90)

Nozzle MaterialBrass wears fast with abrasives; hardened steel and ruby resist them. Stainless and titanium are only marginally tougher than brass at the tip.

Main Filament UsedCarbon-fibre, glow, wood and metal-fill carry hard particles that grind a brass tip in a few hundred grams; plain PLA/PETG/ABS barely wear it.

How We Calculate This

Nozzle Wear Estimation

Estimated life = Base nozzle life x Filament abrasiveness factor
Remaining life = Estimated life - Print hours used
Cost per hour = Nozzle cost / Estimated life

Brass nozzles wear fastest with abrasive filaments because the tip is soft. The abrasiveness factor cuts a brass nozzle's life hard with carbon-fibre, glow or metal-filled filament — but harder tips shrug most of it off. Hardened steel resists abrasive wear roughly 10-50x better than brass (Sovol3D, filampro), so its life barely drops with carbon fibre. A ruby tip (an aluminium-oxide gemstone) showed zero measurable wear even after 8 kg of carbon fibre (Olsson), so this calculator treats it as effectively immune to abrasives. Stainless steel is only marginally tougher than brass, and titanium's real benefit is thermal isolation as a heat-break, not tip hardness — so neither is a true abrasive-resistant tip.

Frequently Asked Questions

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Last updated: February 2026

All calculations are estimates. Always verify settings with test prints before committing to final prints.