Bike Triple Cable Clip
thingiverse
Update 2020-11-20: While the original version of this held on fine for riding, I found that I kept popping them off accidentally when I would pick the bike up by its top tube because I would twist the cables. To help prevent that, I made a more secure version that has longer tabs to go into the mount point. This makes it harder to remove when you want to, but that's the tradeoff for not having them fall off when you don't want them to. ;-) My Specialized Hard Rock has three cables running along the underside of the top tube and I didn't want to keep cutting the zip ties holding them on every time I swap my dropper post to/from this bike. This clip can hold all three cables and is reusable. I should note that as of this writing I haven't ridden with these clips in place yet, but they held on even when I yanked on the cables fairly hard. Probably best to print at 100% infill if your wall settings won't already do that.
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