ARSCH - Another Robust Simple Coil Holder

For my TW-Mini, I wanted a stand-alone coil holder and the ones I found here did not appeal to me too much.
Requirements:
- spool supported on both sides
- spool carried in the center, not rolling like a wheel
- change wihout tools - fast
- capable to handle 200mm/1kg and 300mm/2kg coils

This one is just another spool holder. The trick is the foldable base plate.
Once the coil is inserted, it's own weight closes the clamp that holds it in place.
Draging the spool upwards, it will get