Scale: 1/87 (H0)Printing technique: FDMDesign: PKP Single signal bridgeThe project was created many years ago, when resin printers were not available. I decided to publish it because I assume that not everyone has access to resin printers today. If you have a resin printer, you can always choose one of my resin PKP signal bridges also available on CG.Note: you need to buy additional electronic components and you need to know how to solder. The project should use 3mm diameter LEDs. I suggest buying LEDs with a transparent housing without color, because in the real signaling device the glass is white and the color of the light is visible only after it is turned on. You need to set the retraction parameters correctly so that there are as few threads as possible, and also dry the filament well before printing. Despite this, you will still have to cut out the threads left inside the print with a scalpel.