Achieving a flawless finish on epoxy resin projects comes down to the right sanding technique and, crucially, the correct grit selection. Whether you’re a resin artist, a DIY enthusiast, or a professional maker, understanding which sandpaper grits to use at different stages will help you attain ultra-smooth, glass-like surfaces on all your creations. This page guides you through choosing the best sanding products and grit progressions tailored for resin work.

Understanding Sandpaper Grits for Resin Finishing

Sanding resin is more than just a preparatory step – it’s key to achieving a clear, polished surface free from scratches and imperfections. The sanding process typically follows a sequence, beginning with coarser grits to remove surface flaws, then progressing to finer grits for smoothing and polishing. For epoxy resin, using the correct type and grit of sandpaper is vital, as it prevents surface cloudiness and ensures minimal abrasion marks. Choosing between dry and wet sanding or selecting foam-backed pads or traditional papers depends on your project and working style.

See the Difference: Grit Levels and Polished Results

Compare resin finishes achieved using different grit progressions. Notice how a sequence from coarse to ultra-fine eliminates surface imperfections and enhances clarity. Smooth, scratch-free results are best achieved through patient, gradual sanding – especially with quality products from our Sanding and Polishing category.

“Ebonite Abralon” – Sanding Pads 360-4000 Grit for Resin and Wood

The “Ebonite Abralon” – Sanding Pads 360-4000 Grit for Resin and Wood are specially engineered for both resin and wood. What sets them apart is their broad grit range (360 to 4000), which allows you to move from material removal to ultra-fine polishing without changing sanding systems. The foam backing offers consistent surface pressure, crucial for avoiding divots or uneven sanding, and supports wet or dry use. These pads are a favourite among resin crafters seeking satin or glass-smooth finishes on coasters, jewellery, tables and art pieces.

If you’re looking for the full spectrum of finishing in one reliable product, these sanding pads make grit progression simple and efficient.

150mm Sanding Paper Discs – Assorted Grits for Resin & Wood Finishing

For those working with orbital sanders, 150mm Sanding Paper Discs provide assorted grits to accommodate every stage of resin surface preparation. Their premium abrasive material ensures durability and consistent sanding performance. Each disc includes a 17-hole pattern for dust extraction, minimising mess and keeping your workspace clean during dry sanding. These discs shine when used on larger flat surfaces like resin tables or serving boards, making them ideal for both professionals and serious hobbyists.

A4 Waterproof Sanding Paper Assorted Grits Pack of 4 for Crafting and Woodworking

The A4 Waterproof Sanding Paper Assorted Grits Pack of 4 for Crafting and Woodworking is the go-to option for those who prefer both hand sanding and wet sanding techniques. These papers are available in various grits, and the waterproof construction enables you to use water to minimise resin dust and heat. The A4 size is ideal for controlled, detailed sanding on intricate pieces such as resin jewellery, cabochons, or artwork, offering flexibility for small and medium projects alike.

Dry Sanding Discs Kit 150mm – Assorted Grits for Resin and Wood

The Dry Sanding Discs Kit 150mm – Assorted Grits for Resin and Wood features six grit levels from p80 to p600, providing everything needed for initial shaping, levelling, and finishing. The large 150mm diameter ensures efficient coverage, and the selection of grits is perfect for transitioning from rough shaping (p80–p180) through to fine finishing (p320–p600). Especially suited for dry sanding stages, this kit is great for prepping the resin surface before moving on to high-grit or polishing steps.

Choosing the Right Grit Progression for Resin Projects

The key to a flawless resin finish is proper grit progression – starting coarse and gradually moving finer. Begin with 80–180 grit only if you need to remove significant surface defects or level out uneven castings. Follow up with 240–400 grit abrasives to refine texture, then proceed to 800, 1500, or up to 4000 grit pads, such as the Ebonite Abralon Sanding Pads, for the satin or gloss finish. Wet sanding is recommended for grits above 600 to minimise heat and scratching, with waterproof options like the A4 sheets offering excellent versatility. Remember, skipping grits can leave visible scratches—move sequentially for the best clarity and smoothness.

Expert Tips for a Professional Resin Finish

Always clean surfaces between grit changes to prevent abrasive contamination. Use wet sanding for the final stages to reduce dust and avoid heat damage. Rely on consistent pressure for uniform results—let your sanding pad, not excessive force, do the work for you.