BoboVR M2 Locking Adapter / Hinge to Hold Backstrap in Place

thingiverse

A locking hinge / offset adapter for the BoboVR M2 that fixes the problem of the headset slipping forward especially when ducking in games like Beat Saber. **Update: Added files for left side so you don't have to remember to mirror some of the files.** **Update 2: "Headband Latch - Backplate w Bolt.stl" - Combined back plate and bolt as requested in the comments! It really should have been made like that from the beginning and was only not like that due to the iterative design process I used and my own lack of thorough thought!** **Update 3:** Just noticed someone else already remixed and combined the bolt and back plate; however, I take offense (not really) to their statement that "The original part separated into two parts is very fragile".. I have used this same bolt in a number of projects and under extensive testing I have broken the bolt a number of times and *every time* it has broken it has *always* been due to layer separation from over-tightening, and it *always* happens in the middle of the bolt nowhere near the hex head end which is either combined or not... combining it just make life easier because the bolt doesn't loosen from the housing when you undo it, any added strength from combining it is unnecessary because that is not the failure point of the bolt - layer adhesion is. :P You should **not** over-tighten the hinges, it is only necessary to tighten them enough that the teeth lock together! ##### Explanation: The BoboVR M2 has a terrible design flaw that affects a lot of people, but it seems the yelling of how great it is has drowned out the cries for help from those for whom it just does not work. The M2 uses a rubber grommet (rubber ring) to create tension in the hinge between the headband and back strap; unfortunately, that rubber grommet is just not wide enough to create the friction required to hold the strap in place if you tilt your head back or duck down. I thought it only affected people with long straight hair based on most of the negative reviews and comments on Am*zon and Reddit; however, it seems based on comments to my post about this design that it's more than just that. Although long hair doesn't help because the top layer of hair creates a low-friction surface against the layer of hair below making the headset slip more easily. After making my own headset based on the M2 and two other headbands I've bought and been disappointed with (either too small or the same loose hinge that the M2 suffers from), I have realised that the back strap really needs to be offset lower for a nice fit because then it is pulling straight into the back of the head instead of diagonally up. ##### Instructions: 5 pieces to print, a Two pieces that slot together and hug the headband, one piece that sets the back-strap lower and locks it in place, and a nut and bolt. I would advise to use a small touch of super glue to hold the `Hex Bolt` in place against the `Headband Latch Backplate` otherwise it might fall out of place slightly when you loosen the nut to adjust the strap, which is annoying, but not something to cry about if you don't have any glue. Print at 0.2mm and in PLA is best because it's easier to remove the supports. Only `Headband Latch.STL` requires supports on the build plate only. They can be finicky to remove if printing in PETG as they stick to easily to the teeth of the hirth joint. Cura prints only a small ring of supports which is much easier to remove.