BackClip is an easy-to-use open-source camera backpack clip for those who don't wanna pay a fortune for an off-the-shelf one.
I originally designed this about a year ago and since then it has overcome several iterations. Now I added refined tolerance for easier printing, a new backside, and this handy guide to improve the reproducibility of the project. I'm using the clip on a daily basis since its first version and it has served me well to this point.
If you want to modify it I also included the Fusion 360 file for further improvements.
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Qty | Name | Layer height | Infill | Support | Material |
1x | Clip top | 0.1mm | >70% | Yes - Build plate only | PETG |
1x | Clip bottom* | 0.1mm | >70% | Yes - Build plate only | PETG |
1x | Clip bottom rubber** | 0.1mm | >70% | No | TPU |
1x | Plate* | 0.1mm | >70% | No | PETG |
1x | Plate rubber top** | 0.1mm | >70% | No | TPU |
1x | Button | 0.1mm | >70% | No | PETG |
2x | Screw knob | 0.1mm | >70% | No | PETG |
1x | Nut tops | 0.1mm | >70% | No | PETG |
2x | M5 18mm Flanged button head screw | ||||
2x | M5 Normal height nut | ||||
1x | M3 5mm Low profile socket head screw | ||||
1x | 3.71mm (to 4mm) x 19mm compression spring | ||||
1x | 1/4-20 Tripod screw |
* (with or without the rubber surface)
** (optional, print it if you don't have a multi-material printer)
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I'd suggest printing out the whole clip from PETG (except the rubber parts which are TPU) since it's rigid enough to withstand the stress coming from carrying a camera and has a high enough melting point to resist the heat caused by the sun and its slippery surface helps in the operation of the clip.
The clip's infill should be higher than 70% so it does not bend under the screw's clamping force.
The clip bottom and the plate can be printed with the rubber surface in place with a multi-material printer or by using this trick.
Alternatively, you can just print out them separately and then super glue them together. (In this case, you might need to trim them down a little bit since there is no tolerance whatsoever between the two parts.)
These are the recommended printing orientations with the support materials in place:
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Brake off the supports, cut off the excess plastic with a knife and then file it down in these particular spots (and anywhere else where it's needed):
Filing down the top clip's buttonhole is critical since the button wouldn't even fit into the hole because of the height difference caused by the bridging.
Optionally you can also sand and polish the whole print down for a smoother operation.
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To help with the assembly here is a 3D model which can be opened from any web browser.
TODO
The author hasn't provided the model origin yet.