The best way to maintain sharpness is to use a flat file, followed by a whetstone. Accidents are less likely when using tools that are sharp.
Faces on striking tools can also be maintained best with a flat file. Maintain the convex face and chamfer as it originally appears.
Prevent rust by wiping or spraying metal parts with light oil during long periods of storage.
To replace a wooden handle, first clean the eye thoroughly. Fit the new handle with a rasp or sandpaper. Store the handle overnight in a warm, dry room to ensure dryness. The handle should be driven in tight, and then drive the wood wedge as far as possible. Saw the handle flush with the tool head.
Replace steel wedges as needed.
Don not use a tool with a loose or broken handle.
Do not use an axe as a wedge.
Do not strike a hardened tool with another hardened tool.
Be sure that bystanders are in a safe location. This is especially true for children!
Always wear safety goggle when using edge and striking tools.