> I wonder if a typical children 3d pen, or the likes - ie. dispensing quickly curing plastic thread, etc. - can be used to quickly hand-draw touch-accessible p

> I wonder if a typical children 3d pen, or the likes - ie. dispensing quickly curing plastic thread, etc. - can be used to quickly hand-draw touch-accessible picture/graph on any surface really (or even in 3d as it is intended) Yes, there are a number of ways to make accessible graphics and this is one of them, although I don't see educators using it as often. Here's a study I read about blind people using a 3D pen to make drawings themselves (you can get it on SciHub if you're curious): https://doi.org/10.1177/0145482X20954759 https://doi.org/10.1177/0145482X20954759 > A cheap 3d printer can probably be used when more complicated picture and/or several copies of it have to be done Actually educators of blind folks are making great use of 3D printing for tactile models. This site has a lot of great links if you're interested in the topic: https://printdisability.org/about-us/accessible-graphics/3d-printing/repositories/#touch https://printdisability.org/about-us/accessible-graphics/3d-... > running 3d pen as the printing head instead of the standard thermoplastic head would allow to increase the speed while decreasing precision I doubt very much that this would work. 3D printing pens may have a wider nozzle, but they extrude more slowly and I'd imagine they also have much lower thermal output than a 3D printer because 3D pen users must frequently pause to reposition or make decisions. Essentially a 3D pen is just a very cheap, cut-down 3D printer hotend. However, you can always put a wider nozzle into an ordinary printer, and you can print on paper if you're really constrained by speed and don't want to lay down a base plate.