This Thingy is a mounting frame for a standard servo mount in order to give it a more secure fixing.
The frame is usually glued into the model wing and the servo mount fits neatly and securely into a recess in the top face.
The included fusion 360 file is there for anybody to modify as required.
I printed in PLA with 20% infill which gives it a weight of 14.5g.
Mirror the X axis to produce an opposite frame.

Prusa

I3 MK3S

No

No

0.2

20%

215-60-0.2- with 3 layer wall, top and bottom.

I designed the frame because the usual ply and balsa construction would have been too flimsy in the wing I was building.