So you can already print the Gauss gun right on the 3D printer. Well, not exactly, you can print all the necessary details, add an electronic filling and assemble a working module. Norwegian craftsman hansj66 developed (printed) and assembled a working device with an infrared sensor to activate the launch. So when using the sensor modules can be made electrically independent and simply connect them mechanically to achieve the required power.
As the author admits, the efficiency of the module is now quite small (maybe about 1%), but he is very pleased that everything worked out to type, put together and everything worked. Now he will be engaged only in improvement and refinement.