My lawnmower blades dull very quickly and I have to sharpen them every time I use them. Can I harden them by quenching or case hardening? - Quora
![Metal High quality Hardened Durable Lawn Mower Blades Fits For Masport 200 300 400 500 600 Blades & Bolt 125 x 45mm New Hot Pro - AliExpress Metal High quality Hardened Durable Lawn Mower Blades Fits For Masport 200 300 400 500 600 Blades & Bolt 125 x 45mm New Hot Pro - AliExpress](https://ae01.alicdn.com/kf/Scc176a971175489b9189c7590bf38db8z/Metal-High-quality-Hardened-Durable-Lawn-Mower-Blades-Fits-For-Masport-200-300-400-500-600.jpeg)
Metal High quality Hardened Durable Lawn Mower Blades Fits For Masport 200 300 400 500 600 Blades & Bolt 125 x 45mm New Hot Pro - AliExpress
![Oregon Lawnmower Gator Blades for 30 in. Deck, Fits Toro/Exmark Riding Mower, Set of 2 (30TGR1G32) 30TGR1G32 - The Home Depot Oregon Lawnmower Gator Blades for 30 in. Deck, Fits Toro/Exmark Riding Mower, Set of 2 (30TGR1G32) 30TGR1G32 - The Home Depot](https://images.thdstatic.com/productImages/17d9440c-d4ba-48bc-bd04-e4ddcef89627/svn/oregon-riding-mower-blades-30tgr1g32-a0_600.jpg)
Oregon Lawnmower Gator Blades for 30 in. Deck, Fits Toro/Exmark Riding Mower, Set of 2 (30TGR1G32) 30TGR1G32 - The Home Depot
![Husqvarna 42-in Deck Mulching Mower Blade for Riding Mower/Tractors (2-Pack) in the Lawn Mower Blades department at Lowes.com Husqvarna 42-in Deck Mulching Mower Blade for Riding Mower/Tractors (2-Pack) in the Lawn Mower Blades department at Lowes.com](https://mobileimages.lowes.com/productimages/caa756e9-073e-4c27-adc7-6bcf704763f6/62802786.jpg)