Hidden Blade

This is a Hidden Blade from Assassin’s Creed.

Its based off of RAWICE511’s hidden blade design.
Here’s his video tutorial I followed.
https://youtu.be/OcMYZXER0cs

I spent way too long designing this so no tutorial but I do have sorta guide-pictures.
Its not perfect... Please do leave recommendations on what to change.
With a bit of sand paper and elbow grease this thing does definitely work.

Here’s a tutorial/explanation in case something doesn’t make sense.

https://youtu.be/aszbPhktmEA

Use a strong tension spring instead of jank rubber bands for the blade ejection.
The Screw holes use 3mm bolts.