You can find free 3D printing blueprints for dildos and plugs, saving you some of the hassle and potential embarrassment of picking one up IRL. But these toys aren’t ready for use right off of the printer, and can cause internal damage while spreading germs in the process.
When a 3D printer begins making an object, it does so layer by layer. Over time, the layers build up to make the proper form of whatever it is you’re printing. But 3D-printed sex toys are particularly dangerous for two reasons: The surface is too rough for immediate use, and microscopic gaps in the toy that are almost impossible to disinfect can store bodily fluid and bacteria.