As far as I know, Achim closed up shop completely got out of fabrication. I think he sold the shop to someone who is continuing to produce planes, but I dont know how you would reach him or what the name of the shop is. I dont believe that he is around to sell any of his information. There is a pretty low resolution copy of the blueprint floating around the internet that I will email to you. It may be worth trying to get the picture on a thumb drive or on a transparency sheet and using a projector to scale it up to the 1:1 size.
Fred Murrin makes working copies of Axial propellers. I actually have one of his Dr.I props here at my house. Have not gotten around to hanging it yet.
