Two students of the first year BSc of the Faculty of Computer Science (Francesco Vettoretti left e Filippo Maria Cardano right), printed a protection scaffolding for their drone. The piece has been printed in PLA (blue) and the result has been good at the first trial. The piece was mounted on the drone without screws or glue, in practice fixed only by the elasticity of the material!
This print was made to test the machine, verify the accuracy, test the method of attachment of the first layer of material to the work platen (with the double-sided tape), and test whether student alone could do it.
They used PowerWASP (postazione wst-03), with cable PLA of 1.75mm (190-210 C degrees) and 200C degrees temperature of the extruder.
Since the piece was tiny and this 3D printer does not have a heated platen students have positioned a few strips of double-sided tape between the first layer of the material and the platen.
The protection was designed for a small drone equipped with four propellers (as Philip shows up in the photo above).
The operation to remove the finished piece from the plane was delicate but quite simple; eventually one can help some tools, but without losing the sensitivity of the hands.
The “disposable” base staid stuck to the double-sided tape; the thin white line indicates where it was placed on the moulded part.
In this case, there was no support material to remove, because all the parts of the piece ascended vertically.
Students then finished the piece by hand …
… with the help of scissors and a small knife.
The piece was mounted on the drone without screws or glue, in practice fixed only by the elasticity of the material.
Well, printed and mounted! … Now you go to try if it works in flight.
COSA ABBIAMO IMPARATO DA QUESTA PROVA: (LESSON LEARNED)
>Cliccare una o due volte sulle fotografie per ingrandirle: si riusciranno a vedere dettagli molto piccoli!