For anyone who cuts heavy weight leathers on a regular basis, a saddler's round knife is a very useful tool. This Solingen 329 round knife is an excellent quality heavy weight knife, made in Germany and built to last a lifetime and beyond.
It measures 6 " across the base.
To sharpen a brand new round knife, you need a flat, fine grade sharpening stone. Regular sharpening will ensure that your knife is a pleasure to use. For best results, polish your knife on a strop with jewellers rouge after sharpening on a stone. If you want to fine-tune your leather knife sharpening technique, there are several very helpful video tutorials available to view on Youtube.