Viscosity / Thixotropy Tester

Have you ever wondered why some paints spread smoothly with a brush, while others feel thick and heavy?Or why ceramic slip sometimes pours like cream, and other times like yogurt?That’s viscosity (how easily a liquid flows).And in many materials, viscosity isn’t constant: it changes when you stir, shake, or press it.That’s what scientists/ceramists call thixotropy. This 100% 3D-printed tool is basically a little viscosity meter for makers, artists, and experimenters.It lets you compare how different liquids behave in a simple and repeatable way.Instead of relying only on “feel” when you mix paint, slip, or even concrete, you can get a number you can compare from one batch to another. How does it work?Inside, a spiral spring spins through your liquid.Depending on how thick the liquid is, the spring slows down and stops at a different point.A gear wheel shows the result on a 0–100% scale.Each tooth = 2%.So if your paint always measures around 40%, but today it shows 60%, you know it’s to