Arca swiss parametric camera backpack clip
Description
A locking, arca swiss compatible, camera clip for your backpack or anything else you want to attach it to. The model includes an arca swiss compatible plate if you wish to print that too, so it can be used as a self-sustained system as well. ## Build materials - 2x M4 nut - 2x M4 bolts, length depends on the thickness of the backpack strap, 20mm is most likely good. - 1x M3 nut - 1x M3 x 20mm bolt - 1x Ballpen spring - 1x Tripod bolt (see note) > **note**: The tripod bolt I used was pulled from an old tripod mount I found lying around, it had a weird shape and so to use a more standard bolt you will have to adjust the parameters of the model in the model spreadsheet. ## Build instructions ### Locking mechanism Insert your M3 bolt into the “lock puller” (little nubbin at the end of the bolt in the images). Insert that bolt into the rightmost bolt hole, add the spring stop, and insert the bolt through that too, then clip about 6 to 7mm from the ballpen spring and insert the bolt through the spring too. This might be a bit finicky, but now insert the M3 bolt in between the first and second bolt hole and screw the bolt through the nut, and finally through the second bolt hole. ### Rubbers for the camera clip itself > **note**: only if you actually printed the camera clip with rubbers Since I did not want to buy any rubbers online somewhere, I cast hot glue into a mold and used that as “grippy” rubbers to keep the camera clip from slipping after it was attached to the camera. It works surprisingly well. Simply add a thin layer of petroleum jelly to the mold, put the two mold pieces together, keep them pressed down on each other and inject hot glue into the hole at the top. When hot glue starts comping out of the two small holes at the sides, you can stop and keep firm pressure on the mold until it cools off. You can keep it under water to speed up cooling down. Finally, separate the two pieces and cut off the excess hot glue on the sides of the cast. Now you can glue them into the camera clip with some super glue. Don't use too much or might become a sticky mess as I had happen, which you can see in the pictures. ## Modifying the parameters Open the .fcstd file in FreeCAD, open the spreadsheet and modify any parameters you like. The most notable ones are most likely: - clip_length - Length of the camera clip itself - plate_length - Determines the length of the clip supported - top_incut_rail_width - Determines the width of the top rail, where your tripod bolt slides through - bottom_second_dia - Diameter of the second incut groove, this was necessary for my weird tripod bolt, for most bolts this can probably be the same as the top_incut_rail_width. - clip_height - The height of the clip in total, mine had to be pretty thick because of the weird shape of my tripod bolt, if you have a thinner bolt you might be able to reduce this by a few millimeters. ## Print settings Everything was printed at 0.20 Structural on a Prusa XL with 50% layer infill with PLA and no supports.
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