With a recurve blade like the Blur, a Spyderco Sharpmaker will help out. There are some weak points about the stock Sharpmaker. It works great if the existing edge angles of your knives are close to either the 40 degree or 30 degree angles (20 and 15 per side) that match the slots. If not, you'll spend a fair bit of time reprofiling the edge until it gets there.
And along with that, the brown medium stones are not especially fast at steel removal. The set doesn't come with coarse stones that help you quickly set the edge. They are available, both diamond and CBN, but the extra set of stones can cost more than the basic kit. What I did, personally, was to augment the Sharpmaker with some bench stones - diamonds or silicon carbide, for setting bevels, reprofiling, and quick metal removal, and then used the Sharpmaker for refinement and edge maintenance.
To get there, I had to learn how to freehand in the first place on those coarser stones, which led me into just freehanding in general. I do still use the Sharpmaker for quick touchups sometimes, so it's not a tool you will necessarily outgrow.