Cutting a cultured marble vanity top can present a challenge, because it is a very hard substance that splinters, chips, and scratches easily. With your lines marked itÂ’s.time to cut., now the technique part.


Heytani Bathroom



Cut along the pencil lines using a rotary saw with a sharp masonry blade.

Make your measurement marks on the unfinished side of the countertop to avoid scratching it or leaving marks on the finished surface that cannot be removed.


Cutting Marble Vanity Top


How to Trim a Vanity Top by MarCraft, Inc., one of the nation’s largest manufacturers of custom cultured marble , granite and onyx

Do not get the sandpaper near the finished surface of the vanity top, to avoid scratching it. The guy who showed me how to cut with a router was a manufacturer of cultured marble tops and panels.

Be carefull to support so that the end of the cut doesnÂ’t cause chipping. Use a yard stick, and accurately measure the cultured marble vanity top for cutting. I also use the grinder for cutting off and/or splitting pre-cast columns.

DonÂ’t use force to push the saw, to avoid chipping and splintering the cultured marble surface. Cut from the backside starting from outer edges working in. Mark with pencil on the underside of the marble vanity top to indicate where you want to cut it. Avoid sanding near the finished countertop surface where you could inadvertently scratch the finish. To avoid having the vanity top slip during cutting, resulting in a bad cut, secure the top tightly to the work bench using vice grips or clamps. To avoid scratching or marring its surface, place an old blanket or other soft material beneath the countertop surface.

Use a blanket or towels to cover the cultured marble vanity top or work bench to protect the finished surface from scratches during cutting. Tried using a diamond wheel in the angle grinder, but it didnÂ’t cut very well. As you reach the end of your cut, reduce the forward movement of the saw until it is barely moving.

Keep in mind, the cut edge was not pretty, but it was covered up with a side splash. Has any one used a saw blade or router bit to cut this material with, and have good results? Push the saw slowly and carefully so that the blade follows the pencil lines you drew. It will push the dust underneath the piece and cut down on the amount of air borne dust. YouÂ’ll need to glue some of these edges to the cabinet or base on which it will rest, so youÂ’ll need them to be smooth, level, and to have square, sharp edges. I have had good results with a 24 tooth carbide blade, cutting from backside and starting from top edge of backsplash, then from front edge of counter, meeting at intersection.

Turn the vanity top face down and position the pencil marks for cutting where you have the easiest access.

Cultured marble is ideal for remodeling or upgrading a bathroom because it comes in a variety of colors, surfaces and decorative shapes. Tops are usually 72 3/4″ long vanities 72″ with small filler. To successfully cut a cultured marble vanity top you need a sharp masonry blade and a scratch-free work surface.


Marcraft, Inc. How To Trim A Vanity Top


I had to cut a side splash for a cultured marble top . I used a power saw to make the cut … This is in new construction, so the home

As others said, cut outside, preferably with some wind pushing the dust away from you.

Can be scribed to wall with medium grit beltsander, being careful of rotation direction to prevent chipping.

This type of countertop is made from components such as marble dust, resin, catalyst and pigments, all of which are very hard and brittle and yet easy to mar or scratch. Avoid using power sanders that can make these surfaces uneven and can make gluing difficult. Any type of fine masonry dust has the long-term effect of causing silicosis, a serious lung condition. Be sure it cuts without chipping or splintering the countertop finish. I set a paint can on the counter and it caused some scuffing.

The material, because it is brittle, is also easily chipped and splintered from the spinning saw blade. A cultured marble vanity top is made from resin, marble dust, pigment and catalyst that are molded into shape to create a smooth and shiny finished surface with the appearance of marble. It is great for cutting the inevitable crooked scribe line.

Gives a nice clean cut and no “dust” to worry about. If there is a wall on one or both sides, backsplash will cover any imperfections, if not straighten it out with a wet sander, sanding sponges work best. When cutting its technique.masonry cutting blade is sufficient to cut through one inch or more.


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One wrong cut, and you will have ruined the countertop and will likely need to replace it. Create a clean cut at the end of the cut by moving more slowly the closer you come to the edge of the vanity top. Once this surface is scratched, it will be difficult, or impossible, to remove these scratches.

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Cutting a cultured marble vanity top can present a challenge, because it is a very hard substance that splinters, chips, and scratches easily. With your lines marked itÂ’s.time to cut., now the technique part. Heytani Bathroom Cut along the pencil lines using a rotary saw with a sharp masonry blade. Make...