Sectional Gradient: Thickness Constantly Changing

An Art Nouveau wooden piece with continuously changing cross-section. A door frame or stair handrail, starting at ten centimeters wide, gradually narrows to three centimeters along its curve, then widens again at a turn; the shape of the cross-section also changes, from flat to rounded. The entire component thus appears to have been stretched and twisted. Avoid: using straight components with uniform cross-section, making thickness changes stepwise rather than continuous, making the cross-section a regular geometric shape, making the cross-sections at both ends of the component identical.

Translated from Chinese by AI.

一件斷面連續變化的新藝術木作。一道門框或樓梯扶手,在起點處寬達十公分,順著曲線延伸的過程中逐漸收窄到三公分,再在轉折處重新變寬;斷面的形狀也在變,從扁平漸漸轉成圓潤。整根構件因此看起來像是被拉伸與扭轉過的。避免:使用等斷面的直線構件、讓粗細的變化是階段性的而非連續、把斷面做成規則的幾何形、讓構件的兩端斷面相同。