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Non-porous surfaces include glass, processed metals, leather and plastics, and they are further divided into rough and smooth surfaces. Non-porous smooth surfaces include glass and painted or varnished surfaces. Non-porous rough surfaces include textured surfaces like vinyl and leather.


Some examples of porous surfaces include paper, untreated wood, cardboard, sponge and fabric. These porous objects have pores or empty spaces that allow outside matter, such as water, air and particles, to penetrate beyond the outer surface.


A non-porous material is one that cannot absorb liquid or gas. Glass, metals and hard plastics are examples of non-porous materials.


Porous materials aren't completely solid. They have tiny holes in their makeup called pores. This makes them lighter in density than nonporous materials. Common examples include skin, sponge pumice, and soil. Some people also refer to things like borders as being porous. This means that passage in an


Clean porcelain tile with an alkaline-based tile and grout cleaning solution. Do not use household cleaners, as they can be absorbed by the tile and leave a residue that can build up over time.


Percolate means to filter or trickle through a porous substance. Two examples of percolation include ground coffee in a filter or rainwater through soil on its way to an aquifer. The word comes from Latin "perc?l?tus," meaning "to filter."


Most chalkboards are made from enamel and steel. The enamel used to make a chalkboard is made from a porcelain base, which is applied onto large steel plates. The writing surface for vintage chalkboards is made from slate rock or grit paint applied to wood.


Make a chalkboard by finding a flat object to repurpose, sanding the surface of the flat item and adding a few layers of Krylon chalkboard paint. This takes about 30 minutes plus drying time. You need an object for the chalkboard, sandpaper, painter's tape, a sponge and Krylon chalkboard paint.


Chalkboard paint can be used in a variety of crafts and is quick and easy to make. To make homemade chalkboard paint, mix together two parts Plaster of Paris, one part water and three parts acrylic paint. You will need Plaster of Paris, acrylic paint, water, a measuring cup, a bowl and a spoon.


To build a chalkboard sign, cut, prime and sand a piece of plywood, apply chalkboard paint and add screw eyes to attach a piece of rope or string to hang it by. You can then hang your sign wherever you need it.