3 ms·
One time when I was very young, I was given some paper to draw on. It looked and felt like normal paper, but when you drew on it with a marker, it would swell u
by alnwlsn 2y ago
One time when I was very young, I was given some paper to draw on. It looked and felt like normal paper, but when you drew on it with a marker, it would swell up under the marker line creating a raised area. Putting a piece in water revealed that it was some sort of ultra compressed sponge, like a thin version of those compacted kitchen sponges you can get.
I realized later that it must have been some sort of "paper for the blind" so that you could draw on it or maybe print on it with an inkjet and be able to feel the surface even if you couldn't see it. Maybe it was just a sponge, but it didn't seem any thicker than normal paper. It's been 20+ years and I've never encountered anything like it since.
- lawlessone 2y agoTactile paper?
- akkartik 2y agoThanks for that keyword: https://americanthermoform.com/product/swell-touch-paper https://americanthermoform.com/product/swell-touch-paper
- tdeck 2y agoI'm curious what you had because swell touch paper doesn't exactly behave that way, it's thermally activated and the areas you drew on need to be heated up before they will swell. There are sponges that come compressed flat (e.g. soldering iron sponges) and it looks like they sell larger sheets of them for some purpose as well: https://www.dickblick.com/items/hygloss-sponge-ums-pkg-of-4-5-x-7/?clicktracking=true&wmcp=pla&wmcid=items&wmckw=24277-1001&country=us¤cy=usd&gQT=1 https://www.dickblick.com/items/hygloss-sponge-ums-pkg-of-4-...