Case/Holder for soviet ZENIT-ET camera

Custom case or holder for Zenit-ET (or Zenith?).

Zenit-ET - is soviet popular film 35mm camera, that produced in USSR in various modifications and variants...very various. Some of them had "Industar" lens, most of them had "Helios" lens and most of them had special rings for belt (strap lags? I dunno english perfectly for some obvious reasons)), but my Zenit is very unique. It does not have a automatic diaphragm, it doesn't have rings for belt. And for that reason I created printable holder.
And holder have also hole for bolt 1/4" and you can make photos without any (known) problem (of course, you must unscrew and detatch holder from camera to recharge the film).