| Do not rub aggressively as this could cause discoloration and roughen the surface. |
| The coarser the powder, the more the grains roughen up the surface for more of a textured finish. |
| I've heard mixed feedback regarding the use of a mild acid wash to roughen up or etch the surface and create more traction. |
| Installing the tailplane is now extremely simple: first roughen the joint surface of the integral root fairings using coarse abrasive paper. |
| First you take an abrasive pad and roughen the material to provide a better gluing surface. |
| Other equipment like discs and harrows can be used to roughen the texture of the soil on a slope. |
