Super cool idea! Really fun! Looks beautiful. Great tutorials! Looking forward to cracking my first real virtual safe.
A few things: Would be good to have maybe mouseover labels for the different parts, eg. I was often unsure which bit the ‘cam’ or a ‘wheel’ is, would be cool if they had labels when needed, and some of the instructions in the tutorial say “turn left or turn right”, might be more useful if it said clockwise or anti-clockwise since turning left on an upright mechanism is a bit confusing.