Understand the Impact of Skipping Grits

What happens here

The presenter explains the rationale behind the 'don't skip the grit' rule. The scratches left by a coarser grit, such as 120 grit, are too deep for a significantly finer grit (like 180 or higher if skipped) to completely remove. To achieve a truly smooth surface, each preceding grit's scratches must be meticulously removed by the subsequent, slightly finer grit. This ensures that you don't leave deeper scratches hidden under a superficially smooth surface, which can become visible after staining or finishing. The advice is to 'burn it in your brain: don't skip the grit.'

Goal: Comprehend the reason behind the sanding grit progression rule.