Reverse Card Chute

I use "Smart Chute" in school to aid students with their learning of Science and Maths, but never have enough chutes.
This runs on the "Smart Chute" ethos of putting a question card in the top, and it reverses the card so the answer comes out the bottom, but at only 15.5cm high, 8cm depth and 8cm width for easy storage.

Printed in two parts (main body and side lid) and held together with four M3*8 bolts.

Any feedback greatly appreciated.