An actual Ornithopter: Riout 102T
https://oldmachinepress.com/2017/11/20/riout-102t-alerion-ornithopter/
https://www.youtube.com/watch?v=Pj5r9kgni78
Glues for modelling
Glues for modelling Rudol 333 was the preferred glue for the NSFK Schwingenflugmodell by Alexander Lippisch and stated in the supplied plans. The company itself advertised its glue as ideal for model aircraft manufacture. The following nostalgia website provides images of old Rudol 333 and some of the history of the company but the company does not provide its own history. http://www.eichwaelder.de/Altes/altesschild276.html Other glues stemming from the model aircraft building fraternity in Germany is UHU ('eagle owl') glue first invented in 1932 by Fischer. The history of this glue - still available today - is here: https://en.wikipedia.org/wiki/UHU Another glue, aircraft modellers use a lot is 'Superglue' (aka Cyanoacrylate) invented 1947, its history may be read here: https://en.wikipedia.org/wiki/Cyanoacrylate
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