Compression Spring Sliding Vice for PCB's or Microcontrollers

Here we have another vice, this vice can be used when working with PCB's or Micro controllers or any thin flat surcafe object.The vice slides and to use it, loosen the screw on the sliding rod you then place the item between the jaws then compress the vice up with your thumb and then tighten the Allen screw until it grips the shaft, allowing as much pressure as needed to grip the component.I'm no expert but ideally I think it's better to print any type of 3D Printed Vice out of ABS or any strong heat resistant filament.For this vice I used 4mm bar 6mm springs and a 5mm bar for the centre bar which uses a 5mm Linear Bearing, dimensions 10mm diameter 15mm long, 5mm 12mm Flat head Allen screw bolts for the reversible grippers, rotating the grippers gives you the V slot to grip with, they rotate on the opposite gripper as each is offset.I made an error where the 4mm bars go into the middle component, I made the holes straight through so I glued these in with epoxy, the 2 end caps on the 4m