Mortar rakes are designed to wear down the mortar between the brickwork, and as a result will wear down themselves.
Mortar rakes wear down at different rates depending on the type of mortar you are raking, how the mortar rake has been manufactured, and the length of time you are raking for.
It is always a good idea to follow the manufacturer’s instructions when deciding how to store your mortar rakes and when to replace them. However, Wonkee Donkee has provided some general guidelines.
Please note:You should not attempt to remove the mortar rake from the power tool immediately after use as it will be extremely hot and could burn you. Always remove the mortar rake after it has had time to cool down.
Use a soft brush to remove any excess mortar dust that may be trapped between the flutes or grains on a mortar rake.
Over time, a build-up of dust or debris will prevent the mortar rake from being able to grind/cut away mortar efficiently.
Brush all the way around the tool including the shank so that no dust is preventing the tool being cleanly attached to the power tool.
Most mortar rake cutting or grinding sections are either tipped or made from solid tungsten carbide, or coated in diamond. As neither of these materials rust, it is not absolutely necessary to oil them.
Always store in a cool, dry environment, away from other tools that are likely to damage the cutting/grinding surface of the mortar rake.
Do not store tungsten carbide and diamond mortar rakes together, as the gritted diamond mortar rake could scratch the smooth surface of the tungsten carbide tool.