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Wet wipe markers were often used on overhead projector transparencies, as they could be stored and transported easily, unlike a traditional chalkboard. With the rise of computerized slide-shows (e.g. PowerPoint) in the classroom and office, overhead usage has reduced substantially, and with it, the wet wipe marker. Marks can then be cleaned off ...
A chalkboard eraser (sometimes known as a duster in India and elsewhere [1] [2]) is a special type of eraser specifically used to erase chalk markings on slating paint (used on chalkboards and slates). It is most commonly made of felt strips attached to a handle. Chalkboard erasers are typically broad and rectangular, intended to clear large ...
A chalkboard with an eraser in the chalk tray. A blackboard can simply be a board painted with a dark matte paint (usually black, occasionally dark green). [1] Matte black plastic sign material (known as closed-cell PVC foamboard) is also used to create custom chalkboard art. [2]
A whiteboard (also known by marker board, dry-erase board, dry-wipe board, and pen-board) is a glossy, usually white surface for making non-permanent markings. Whiteboards are analogous to blackboards , but with a smoother surface allowing for rapid marking and erasing of markings on their surface.
A permanent marker can also be removed by drawing over it with a dry erase marker on non-porous surfaces such as a whiteboard, [3] as dry erase markers also contain a non-polar solvent. Most dry-erase board cleaner solutions also contain effective organic solvents like 2-butoxyethanol to remove the pigment.
Chalk writing leaves light-colored particles weakly adhering to a dark surface (e.g., white on black, or yellow on green); it can be rubbed off with a soft material, such as a rag. Erasers for chalkboards are made, with a block of plastic or wood, much larger than an eraser for pen or pencil, with a layer of felt on one side.
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