Gardening pros and landscapers, how should you prepare your gardening tools for spring? How should you maintain wooden tool handles (sanding, oiling)? How and when should you sharpen tools, and which need sharpening? How do you remove rust from metal tools? Should you oil tool hinges (like pruners and shears), if so, how? Should you replace black plastic tools, and are they toxic? Is it beneficial to add rubber grips to tools Please share any other ways to prepare tools for spring.