Coarse Grain Polish

Tamiya's Reference Polish for Preparing and Restoring Painted Surfaces

The Tamiya Coarse Finishing Compound (TA87068) is the first step in the polishing process for painted finishes. With a coarse abrasive formulation, it effectively tackles the most visible scratches, brush marks, spray imperfections, or small surface defects that appear after painting or applying varnishes.

Main Features

• Coarse grain: abrasive designed to remove scratches and marks of some depth without damaging the substrate.
• 20 gr format: compact jar, convenient for working precisely on small or medium parts.
• Product from Tamiya's Finishing Abrasives range: designed to be used in sequence with the fine compound and final polish.
• Creamy texture: easy to apply with a cloth, sponge, or cotton swab depending on the area to be treated.

Applications

This compound is particularly useful in the following situations:

• Removal of sanding marks or small scratches on cured lacquers, enamels, or acrylics.
• Preparation of the surface before applying the next polishing steps (fine grain and gloss).
• Restoration of slot car bodies or static models with a glossy finish that have suffered scratches during assembly or handling.
• Work on figures and dioramas where a meticulous finish is required in specific areas.

Application Tips

To achieve the best results, apply a small amount of product onto a soft cloth or polishing sponge and work in gentle circular motions on the area to be treated. Do not apply too much pressure: let the abrasive do its job gradually. Once the excess is removed with a clean cloth, evaluate the result before moving on to the fine grain. Always work on completely dry and cured surfaces.

Ideal for…

This polish is aimed at modellers, miniature painters, and slot enthusiasts looking for a professional finish on their pieces. If you regularly work with slot car bodies made of resin or plastic, or if you pay special attention to the finish of your static models, this compound fits perfectly into your finishing toolkit.

Considerations

The coarse grain is the first link in the polishing chain. By itself, it leaves the surface more uniform, but does not provide the final shine. To achieve a mirror finish, it is necessary to continue with the fine polishing compound and subsequently with the gloss finish from the same Tamiya range. Do not use this product on matte or satin surfaces if you do not wish to alter their finish.

Frequently Asked Questions

Is it compatible with all types of paints?

It works on fully cured paints, both acrylics and enamels and lacquers. Always ensure that the paint layer is completely dry and hardened before applying the polish.

How many polishing steps does Tamiya recommend?

The Tamiya Finishing Abrasives range is designed to be worked in three steps: coarse grain (this product), fine grain, and final polish. Each step prepares the surface for the next, and together they achieve a high-quality finish.

Can I use it on slot car bodies?

Yes. It is commonly used to restore plastic or resin bodies that show small marks or scratches, especially on pieces with a glossy finish. Apply carefully and in gentle motions to avoid generating heat or deforming thin areas.

Is the 20 gr jar sufficient for several projects?

Since a very small amount of product is used in each application, a 20 gr jar lasts for quite a few working sessions, especially for small or medium-sized parts like models or slot car bodies.

Can I apply it by hand or do I need specific tools?

It can be perfectly applied by hand with a microfiber cloth or a polishing sponge. For larger surfaces or work that requires greater uniformity, it can also be used with a low-speed electric polisher, although for miniatures and models, manual application offers greater control.

Tamiya Coarse Finishing Compound (TA87068) is a 20 gr abrasive paste designed to remove visible scratches and surface marks on painted scale models, static kits, miniatures and slot car bodies. As the first step in Tamiya's three-stage polishing system, it prepares surfaces for fine compound and gloss finish. Compatible with acrylic, enamel and lacquer paints once fully cured. A must-have tool in any modeller's finishing kit.