Raspberry Pi B+/2B/3B simple case 2

This thing was designed based on https://www.thingiverse.com/thing:803447.
And for "Official 7inch LCD frame and stand 2"
https://www.thingiverse.com/thing:2347633

There are several variations. And there are things of experimental design among them.
Please find "box_247_readme.pdf" and read it.

-PLAN-1; box_247_bdy.stl & box_247_cvr1.stl
Jumper-wire(for bread-board) ready but not for GPIO flat cable & connector.
-PLAN-2; box_247_bdy.stl & box_247_cvr2.stl
GPIO flat cable & connecto