Our tips are the most durable hot-wire tips you can buy. In spite of that, it is possible for them to break or wear out. We do replace broken or worn out tips. Simply slide off the foam grip and mail the pen to us in a small padded envelope between 2 pieces of thin cardboard. Mail costs should be very nominal (Canada and US) if you take the grip off. If you bought the pen from us and it is less than a year old, tell us so and we will replace the tip at no charge. If it is over a year old, the tip replacement charge for a Razertip® pen is only $7.00 including return postage! Please include payment - check or Visa / MasterCard information with the pen. See our mailing address on "contact us" page.