This is a helper for cable soldering. 

Exchanged to a faster to print design and attached CAD file.

Update 16.04.2023:
As requested I added a chamfered version of the model.

Thanks and Credits to the originator of this print: mistertech 
https://www.thingiverse.com/thing:1725308

Update 26.01.2024:

As there were some remixes which added more fancy fuctionality to this soldering jig. e.g wider, narrower, vice holding capabilities etc. I added a  flex-version with variable width and the possibility to add a post for vice clamping. It is based on a dovetail base and you can adjust the width of the jig. Optional you can press in the post. Also added updated Fusion 360 drawing.