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Filament welding/splicing jig — image 1
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Filament welding/splicing jig

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For those who can't let go of filament remains

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Updated at source:

Model information

Category
Accessories
License
Creative Commons — Public Domain

4 versions are available: with (recommended) and without 4 mm hole for PTFE tube and with (recommended) or without side clips to ensure that rig won't open midprocess (though connecting pins should fit quite tight and hold it good enough anyway). 

Also uploaded project file for recommended version, set up for PETG (printing result on photos).

I'd suggest using dynamic layer height with lowest possible height (0.06 mm in my case) for filament channel section to avoid postprocessing/drilling. My printed version fits filament tight, but it can be moved as needed without issues.

Clips should fit tight, if they don't fit at all - check inner parts of sides, it's quite thin and may get bent inwards depending on filament and settings, easily fixable with paper cutting knife.

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