I send mine to Dynamic. Order flat rate box with postage. Mailman drops it at house, then picks it up when I'm ready. UPS guy brings it back two weeks later. Check Dynamic's web site to see what they use to sharpen blades. Compare Forest's and Dynamic's pricing. Dynamic is about 1/2 of Forest's price, and better quality. Remember that Forest is a sharpening service that sells over priced blades to generate business. With today's equipment anyone can duplicate what Forest does.