Achieving a mirror finish on wood is a two-step process. First, the wood surface must be perfectly smooth. Any imperfections will be magnified when the surface is highly reflective. Second, a high-gloss finish must be applied to the surface. This can be done with either varnish or lacquer.
The key to getting a perfectly smooth surface is sanding. The wood should be sanded with progressively finer grits of sandpaper until it feels silky smooth to the touch. Once the wood is properly sanded, it should be wiped down with a tack cloth to remove any dust before applying the high-gloss finish.
Varnish and lacquer both provide excellent protection for wood surfaces while also creating a high-gloss sheen. When applying either of these finishes, it is important to work in thin coats and allow each coat plenty of time to dry before applying the next one. Usually, three or four coats will be sufficient to achieve a mirror finish on wood surfaces.
Sand the bare wood as needed to smooth it and remove the old finish
Start by sanding the wood with a medium-grit paper to remove any old finish and smooth the surface. If there are any deep scratches or gouges, use a finer-grit paper to s and them out. Once the surface is smooth, switch to a very fine-grit paper (around 600) and s and in the same direction as the grain. Wipe off any dust with a damp cloth and let the wood dry completely.
Now it’s time for polishing. Apply a thin layer of polish with a soft cloth, working in small sections and using circular motions. Polish until you’ve achieved the desired level of shine, then buff it out with a clean, soft cloth.
Fill the grain with an oil-or water-based wood grain filler
Wood grain fillers come in both oil-based and water-based formulas. They are applied with a putty knife and can be easily removed with mineral spirits or water. Oil-based wood grain fillers are typically made from boiled linseed oil, which gives them their amber color, and can be used to fill large areas quickly. Water-based wood grain fillers are white when first applied but will dry clear. They take longer to dry than oil-based wood grain filler but are less likely to shrink or crack as they age.
Spray one coat of lacquer
If you want to get a mirror finish on wood, one option is to use spray lacquer. This type of lacquer can provide a very smooth and shiny finish that looks like a mirror. It is important to note that you will need to apply several coats of lacquer in order to get the desired effect. You should also make sure that the surface you are spraying is completely clean and free of any dust or debris.