Fountain Pen

Splashery stretches a drumhead over this Splash's outline, twelve inches across, and finds the ways it can ring. Its lowest is 510.5 Hz, 43 cents flat of C5. The next fifteen are its overtones, and each one draws its own figure: sand gathers on the lines that stay still.

Tap it to uncap the pen and write a swirl in wet blue ink.

A fountain pen carries its own ink inside. The ink runs from the barrel through a thin channel called the feed to a split metal nib, and the slit draws it down to the paper by capillary action, the same pull that lets a paper towel soak up water.

This one is made from a detailed 3D model of a real green pen. Tap it and the cap slides off and clicks onto the back end, the nib writes a looping swirl that shines while it is wet and dries darker, and the cap goes back on. With ✋ Hands-on on, pull the cap off the nib yourself and push it onto the back end, where it clicks on turned around, the way people post a cap while they write.

This link opens it in the Playground. To put it on your own page, add the element and one script tag. Every option.