If you have a 3D-printer. You will sooner or later want to join filament to be able to use up all your stumps you get. I decided to take on the problem and this is what I came up with. I know that Rich already designed a nice joiner ( ), but that requires that you have a heat resistor and that you use the computer (software) to control the heat. This results in that you cannot join filament while you are printing. :)

PS: The Sketchup file is just an example (I had to have a file). :)

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