Removing the Rust Preventative & Sharpening the Blade
What Should I Do First?
The plane should be completely disassembled. Clean the adjuster and all machined surfaces with a rag dampened in solvent/degreaser. Old toothbrushes are also handy for this work. The rust preventative you’ve removed should be replaced with a silicone-free surface treatment such as Boeshield T-9 or Veritas Tool Wax. Use a light machine oil on the adjuster. The plane can now be reassembled; be sure not to overtighten any screws.
How do I sharpen my blade?
Polish the back of the blade, working your way up to the finest grit of your sharpening medium. The back should be lapped and polished to the same degree that you will be honing the bevel.
Two-piece router blades can be separated, mounted in a blade holder and sharpened free hand or in a honing guide.
Blades with the cutter fixed to the shaft must be honed free hand. This is best accomplished by hanging the blade shaft off the side of a stone and moving the blade back and forth, not side to side. This helps ensure the cutting edge is sharpened straight across. Unlike bench planes, router plane blades are always used with square corners.
Once the blade is sharp, you can reassemble the plane and put it to work.