V-Rail hotbed levelling mount (not just for Cobblebot)

I have made these so I can level my new Cobblebot heat bed but will work with any V-Rail based printer (maybe even something else)

I have used M3x30mm bolts and M3 wingnuts. Don't remember where I bought the springs but they will probably be from open builds?

The mount holes are made for M5 bolts. When it comes to the levelling through hole, it's not a bad idea to clean it with a drill after you print it so the M3 screw doesn't get jammed while adjusting.