Bushcraft knives and tactical fixed blades are usually large blades that typically have thick spines. These types of knives can sometimes require wider sharpening angles. For these reasons, you'll want to choose a sharpener that has a wide angle range and a vise that can open up wide to accommodate thick blades. As someone who wants a lightweight/compact sharpening system, these are the best sharpener options for you. Either of the below options will make a great choice.