Follow the gilded frame of this chair with your finger and you will feel a fine raised bead running along its edge, unbroken, all the way from the foot to the crest and back down again. Keeping that bead the same width the whole way is harder than it sounds.
A machine cutter can only run along a curve of one radius at a time, and this frame changes radius constantly - it flattens along the arm, tightens into the scroll, swells over the shoulder of the back. Every change would need a different setup, and every setup leaves a join.
Our carvers use a scratch stock instead: a small hand tool with the bead profile filed into a steel blade, drawn along the edge by hand. Because it follows the wood rather than a fixed path, it can go round any curve without stopping, and the profile it leaves is identical at every point along the run. It takes many passes, each removing almost nothing.
What that gives you is a continuous line of light travelling round the gilded frame with no interruption anywhere. Break it once and the eye catches on the break forever. Never break it, and nobody thinks about it at all.