We had to hand shape the blades. Each one needed to look like a wing foil. They had a fatter side and a thin trailing side just like an elongated bird...wing. This had to be done using grease pencils as markers and a large spoke shave to remove the wood. Before I started I did not know how to shape blades. By the time we got done I did.At the mounting end of the blades we tapered a little angle into it. This would give the blades the tilt they needed to operate. We bolted the blades down with. A shirt tied at the waist, and the shortest shorts you can imagine. With no panties on, her pussy hair had little chance of staying covered. It literally stuck out every where.This, I'm going to enjoy I thought to myself....Aunt Helen slowly reached over to my flaccid dick, which I had left exposed, resting on my thigh, hanging from my boxers.She began to manipulate it by slowly stroking whilst still managing to eat with the other hand.Before long, the head of my manhood was above table height,. I lay on my bed thinking of what I was going to do at 10.30 About 8 I went down to get a drink of juice. Mum was sitting alone in the lounge. “Where’s dad?” “Went to the pub for an hour or so…” I sat on the sofa after getting a small bottle of Pepsi. Mum was seated on her armchair in the corner. “Why ya change the shirt mum? Mum looked at me with an expression I could not quite make out. “ I got… you know… it got a little wet with …you know… after I put it on… I didn’t have a chance to wipe. I closed my eyes. I felt his warm lips touching mine. We went on with a long passionate kiss. Meanwhile, his hands were rubbing my hairy vulva. His fingers were lubricated with my love juices. He kissed my breasts and inhaled the vaginal juice that I had coated on my nipples as he masturbated my clitoris. He lifted me in his arms and carried be to the bed room. I pushed him on the bed and jumped on him. I stripped him off all his clothing. I felt him tremble in lust while he rubbed my breasts.