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I believe the numbers denote the number of grains of "sand" per square inch.

This number refers to the level of "grit". Therefore a 50 grit patch of sandpaper is rough and a 200 grit patch is much smoother.

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14y ago

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What do the numbers mean on the back of glass paper?

The numbers on the back of sandpaper refer to the grit size, which indicates the coarseness or fineness of the abrasive particles on the paper. Lower numbers indicate coarser grits, suitable for heavy material removal, while higher numbers denote finer grits, ideal for smoother finishes.


You used sandpaper to shave your legs will it grow back thick?

Yes


How can I sharpen a knife using sandpaper?

To sharpen a knife using sandpaper, start by securing the sandpaper on a flat surface. Then, hold the knife at a 20-degree angle and slide it back and forth across the sandpaper in a smooth motion. Repeat this process on both sides of the blade until the knife is sharp. Remember to use a fine-grit sandpaper for best results.


What is the coarse sandpaper?

Coarse sandpaper has lower grit numbers, typically ranging from 40 to 60 grit. It is used for heavy material removal and rough sanding tasks where a smooth finish is not required.


How the roughness of sandpaper affect its ability to smooth various surfaces?

The rougher the sandpaper, the more it takes off the material being sanded. The finer the grade (smoother) the smoother the finish will be. Rougher grades are used at the beginning to remove tool marks and shape the material, and you gradually work up to the finer grades for finish work. The very finest grades are used to polish the finish.


Does a piece of sandpaper turn a different color or warmer or cooler or rougher when rubed back and forth on a piece of wood?

Sandpaper gets warmer when rubbed against wood due to friction.


Which of these will always happens when sandpaper is rubbed back and forth on a piece of wood?

The wood changes color


Whofirst used sandpaper?

The Chinese were the first to use sandpaper, dating back to the 13th century. They would glue crushed shells and sand to parchment to create an abrasive surface for smoothing wood.


Who created sandpaper?

Sharkskin was originally used as Sandpaper. When modern manufacturing techniques came, sandpaper was mass produced.


Is sandpaper helpful or harmful?

Sandpaper is both helpful and harmful.


What is Scratchiness?

Um...Sandpaper??I am not sure but i would prefer Sandpaper....?


What is scratchy wearing?

Um...Sandpaper??I am not sure but i would prefer Sandpaper....?