In order to not void your unlimited lifetime warranty, please call us toll free at 888-544-7254 for instructions on returning your shears for service. We will direct you to a certified SHARK FIN sharpener in your area. ALL service and sharpening on Shark Fin Shears MUST be performed by a certified Shark Fin sharpener. Every time you need to have your shears sharpened you are required to call our office to make sure the sharpener you previously used is still certified by Shark Fin. (Because sometimes we uncertify a sharpener due to no longer meeting our high quality standards in workmanship) Failure to do so will void your warranty. You may also return your Shark Fin Shears to the Shark Fin Shear Service Department if needed. The cost is $30.00 for resurfacing your blades. If the shears have any nicks or chips in the blades the charge is $35.00 (for US residents only, all others call for prices); turnaround time is 4-6 weeks. (These prices include shipping your shears back to you and we also insure them for you against being lost or stolen during shipping.) Turnaround time at our certified sharpeners is normally 5-7 business days at similar prices. Use of non-certified sharpeners will void your warranty; using our certified sharpeners keeps you from voiding your warranty and will increase the life of your shears significantly.