2. Compounding

The fine scratches left from the sanding are now removed with a machine buffer and TR-311 Buffing Compound. It is important to buff the entire surface, bringing it to a reflective sheen (as seen in Figure 2) since previous residue and microscopic imperfections must be removed. Deeper sanding marks and dull spots may require initial buffing with TR-309 Regular Compound followed by TR-311 Buffing Compound for final finish gloss and smoothness.