Clean and Mask Surrounding Areas

What happens here

After sanding, wipe down the entire railing with a tack cloth or a damp cloth to remove all sanding dust and debris. Allow to dry completely. Next, strategically place drop cloths or plastic sheeting on the ground and surrounding walls. Use painter's tape (blue tape visible in video) to secure these coverings tightly and create clean lines around the railing. Cardboard pieces can be placed under the railing posts to catch drips and overspray, and also to slightly elevate the railing for easier access to all sides, if applicable.

Goal: After sanding, clean the railings to remove dust and then meticulously mask off all adjacent surfaces to protect them from overspray.