Roberto B.

I use 3K braid for the reinforcement. I start with a center piece which covers about 2" either side of center, and finish with single tubes on each blade starting from the knuckle. The area around the start of each blade has two layers in other words; single layer everywhere else.

I use epoxy on the carbon sock and then vacuum bag the whole assembly.

The process really starts by first heat forming two sets of polyester plastic blade "molds" that surround each blade. This is as simple as cutting the sheet to shape and forming around each blade with a monokote heat gun. The carbon-epoxy covered propeller is inserted into these "molds" and secured. One of these days I may get around to writing a full description and publishing in MAN or MA.

The prop is removed from the mold and finished, polished, balanced. I'll take a snap tonight and post. I also have MDK props shown in the SAP180 for Pattern thread.

Oh yeah, the wood blanks are Xoar electric woodies of proper diameter and pitch. I reshape the electric blades for gasoline and thin them even more to accommodate the carbon sock. The hub of the electric props in not wide enough for a multi bolt propeller installation but the OS has a single nut installation, ideal for my props. For multi bolt mounting, the prop hub is widened first with maple

The 20x10 MDK prop weighs 74 grams, on par with first generation electric carbon props....but of course it is used in a gasoline application.....It is a true "stressed skin" laminate