Okay, here's how to approach sanding rounded edges with an orbital sander, based on the reference provided and general woodworking practices for using such tools on curves.
Using a foam cushion pad is a key method shown in some demonstrations for effectively sanding rounded edges with an orbital sander.
According to the YouTube reference (Quick Tip - Sanding Smooth Curves), one technique demonstrated involves using a specific type of accessory on your random orbital sander.
The Essential Tool
The reference highlights the use of a specialized pad:
- Burnett sanding pad: A 5-inch sanding disc with a half-inch foam cushion.
This pad is attached to a random orbital sander (like the Craftsman random orbital sander mentioned).
How the Foam Cushion Helps
A standard orbital sander pad is rigid, which can make it difficult to maintain even pressure and contact when sanding a curved surface. The foam cushion on the specialized pad allows the sanding disc to flex and conform more closely to the shape of the rounded edge. This helps to:
- Reduce flat spots
- Provide more consistent sanding across the curve
- Minimize the risk of creating divots
Technique for Sanding Curves
While the reference primarily focuses on the tool, the general technique for using an orbital sander on curves involves:
- Attach the Foam Cushion Pad: Ensure the foam cushion pad is securely attached to your random orbital sander.
- Select Appropriate Grit: Start with a lower grit sandpaper if significant shaping is needed, and progress through finer grits for a smooth finish.
- Apply Light Pressure: Avoid pressing down too hard. Let the weight of the sander and the foam cushion do the work. Excessive pressure can still create flat spots or dig into the curve, even with a cushioned pad.
- Maintain Consistent Movement: Keep the sander moving along the rounded edge. Move smoothly back and forth or in small circles, following the curve's contour. Avoid holding the sander stationary on one spot.
- Follow the Curve: Gently tilt or angle the sander as needed to keep the pad flush with the curved surface. The flexibility of the foam pad makes this easier.
- Check Your Progress: Periodically stop sanding and feel the curve to check for smoothness and consistency.
Summary of Key Components from Reference
| Component | Description | Purpose on Curves |
|---|---|---|
| Random Orbital Sander | Standard power sander tool | Provides sanding action |
| Burnett Sanding Pad | 5-inch disc with foam cushion | Conforms to curved shapes |
| Foam Cushion | Half-inch soft layer | Allows pad to flex |
Using a random orbital sander equipped with a flexible interface pad, like the foam cushion described in the reference, allows the sander to better navigate and sand the varying surface angles of a rounded edge, leading to a smoother, more even result than using a standard rigid pad alone.
