Is a Rotary Sander Needed for Resin?

Wondering whether you really need a rotary sander to sand resin? The answer depends on your project scale and the finish you’re after. Let’s explore the options and see when mechanical sanding makes a difference.

Hand Sanding vs. Rotary Sanding

Sanding resin by hand is perfectly fine, especially for smaller or detailed projects such as jewellery, coasters, or intricate art pieces. Manual sanding offers greater control and lets you focus on problem spots carefully. However, it can be time-consuming and physically tiring, particularly for broad, flat surfaces or larger pieces.

A rotary sander (or an orbital sander) is not essential, but it greatly speeds up the process on larger resin surfaces. It provides a consistent, uniform sanding motion, reducing visible lines and helping you achieve an even result more efficiently. For large tabletops or resin river tables, using a machine sander often gives a professional finish with less effort.

Choosing the Best Sanding Method for Your Project

The ideal approach depends on your needs. For small resin objects, a pack of A4 Waterproof Sanding Paper with assorted grits is usually all you need. If you’re tackling larger projects or want faster, more uniform results, rotary sanding with pads such as “Ebonite Abralon” – Sanding Pads can make a big difference. These pads can be used by hand, but deliver optimal results when paired with a pad holder or machine sander. An interface pad, like the Mirka Sanding Interface Pad, helps produce a finer, more even finish by cushioning contact with the resin surface.

When Does a Rotary Sander Matter Most?

If you have a large expanse of cured resin to smooth, or you want a particularly flat and uniform finish, a rotary or orbital sander is especially beneficial. For detailed areas or tight corners, hand sanding remains the better choice. Ultimately, using both methods as required will help you achieve the best results.

Related guides

How To Sand Resin

Whether you choose to sand resin by hand or use a rotary sander, understanding your options ensures a smooth and successful finish. For more tips, techniques and product advice, return to the main resin sanding guide.