Yes it was rubbish very breakable and noise.... but it is the past (2018)! This time we can buy many different good type of prop!

yeah 3D printer design canopy on countryside for poor builder at 2018 😄

Honestly, I have been printing parts for my quads for at least 3 years now, and after a TON of design time and parts made, I still like that zip-tie roll cage. It's just a lot of protection, for almost no weight penalty on a craft that size. Crazy cheap, readily available, can be repaired in the field, what more could you ask for? You can carry a hundred spares in the bottom of your bag, and never notice the weight, or the space they take up. I wish my birds were light enough, i'd put it on all of em.
I'm surprised that I never see them on toothpick builds.

yes i do not remember very well it was build some years ago and first time may be I cut prop from 3,5" yeah loud and very fragile!
thnx