Hi, Demian. I think the material for the main blades is some kind of carbon fiber filler, PETG is very brittle, ABS+ with carbon fiber! But I assure you that chopped carbon fiber does not affect the strength in any way, it only makes it look beautiful,
I just printed some 110mm blades from my K110s from PLA. Printed th bottom flat onto the print bed and then just tappered the blade toward the tip from 2.6mm to 1mm and taper to the back from the leading edge. sanded top smooth a bit (has 4 layer teps but very even. Works an absolute treat.
That sounds great! Just be careful on how aggressive you're flying with them lol I blade stuck my tail boom and had my rc helicopter explode. For basic flight its great! Send over some photos and videos if you have any!
This is what the blades did to my helicopter lol...granted the whole airframe was also 3D printed! ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-22itKINcDJc.html
