Chain guard for road bike Tiagra 52 theet chainring

I use my road bike to get to university and work and therefore I'm not a big fan of black stripes on my trousers.

I couldn't find a commercially chain guard for the Tiagra crank I'm driving and couldn't find a printable one that would fit on my bike. I also didn't liked to use screws to put it on my bike.

So I designed this chain guard. It has Inbus pins which are getting thicker towards the base to be able to push them tightly into the chain ring bolts. You will have to turn the bolts sl