Part of the New Jersey Governor STEM Scholars project, our team sought to make a 3D filament splicer:

Website: https://sites.google.com/view/filamentsplicer/home?authuser=4

The first file is the fusion360 file for ease of use, especially for those in schools and university which are eligible for a free limited license. The following two are STL files of the current prototype, the final file is an earlier heating chamber design for those who prefer such style and would like to integrate it into their version.

There can be many improvements to be discussed on the website.

Assembly printed out of PETG using an Ender 3 Pro