Angle Clamp 100% 3D Print and Quick Release!

Whilst in the process of updating some of my previous designs to 100% 3D Print, I designed an Angle Clamp, it was playing with that particular clamp which gave me the idea for this clamp.This angle clamp as well as being 100% 3D Printed is also a quick release clamp, a lot of time is spent screwing either up to the job or after so I thought why not try and make this process easier.The principle is fairly simple, we are just using half the thread to lock onto the screw, I have added means to use an elastic band to keep tension on the half nut whilst clamped.The clamp is best used when its secured to a surface purely because you have to lift the thread block when screwing in and out, there are 4no counter sunk holes to secure, or use double sided tape.To use the clamp you lift the thread block, either with the rubber band on or off and slide the plunger up to the work piece then push the thread block back in, with the work piece aligned, turn the screw to tighten up to the work piece, to