hi i download files but not can to open this

how can open this

Can you clarify the question please?.  We use a single component so we have a single mold.  We then use different quantities of the single part to make turbines of different sizes.  Hope this answer makes sense but if I have answered the worng question, please clarify

I just toughed i saw different parts glued together in the photos of the blades. And because its such a difficult shape it made sense to me that you had several molds to make the parts and then glue them together to form a single blade. how did you manage to make it as a single part? thanks for the reply

No, there are definitely no parts glued together.  That would be far too time consuming. With FRP, the usual way to make the mold is to use a foam cut.  Unfortunately, I do not have pics of the foam cut for the blades.  But, if you look at our LUKA EV car project you can see the foam cut of the car shape at 

https://hackaday.io/project/5066/gallery#ac716df14a7b9d1929f3b6ec45af722f

It is the same process for making the shape of each blade.  Hope this helps?

How did you divide the blade up to make the molds? thanks