| I then used some 180 grit sandpaper to roughen up the surface of the plexi to create the desired effect. |
| As the surfaces roughen, inflammation and the number of bleeds can increase. |
| Do not rub aggressively as this could cause discoloration and roughen the surface. |
| Other equipment like discs and harrows can be used to roughen the texture of the soil on a slope. |
| The coarser the powder, the more the grains roughen up the surface for more of a textured finish. |
| Old freight wagons with bake shoes roughen the surfaces and thus emit more noise. |
