Hawker Hart

I recall reading, somewhere, that he Hurri was made as a biplane, too, for extra-short field take-offs. The top wing could be jettisoned in flight!
I don't think it was very successful!

You means like this?

It was flown in this form but never jettisoned the wing in flight.
Unlike this one off test plane, the Hillson Bi Mono, which did once.

Wing slipping was made unnecessary by having bigger airfields with better surfaces & increased engine power so allowing heavily loaded take offs.

A few technological experiments...
These are the parts of the lower wing.

Nice work, it's wing tips I presume? Is that electrical tape you're using to hold the forms?

Impressive construction.
It has al the makings of being a true 'labour of love'!

Yes, this is the wing tip. A rubber band for Pilates is used to wind the slats. I cut a narrow strip from it.