Not sure if this counts as a scratch-build or a conversion . . . anyway, I wanted to add a Halberstadt D-type to the One Wing Biplane fleet, but the only kit that I could find was the less than perfect Pegasus one, and I couldn't find one for sale anywhere. However, looking at pictures and drawings of Halberstadt scouts, I realised that I could use a Fokker Eindecker as a basis for a model. It wouldn't be true scale, but would be close enough for me . . . 
Halberstadt Scout, unknown unit, die Fliegertruppen des Deutschen Kaiserreiches (Imperial German Military Air Service), autumn 1916.
Fuselage aft of the wings and horizontal tail from a 1/72 Revell Fokker Eindecker, wings from a 1/72 Revell Sopwith Camel. Forward fuselage plastic card, top decking epoxy putty. Rudder, undercarriage, gun and propeller from the spares box, decals are from Almark sheet A29 'German Crosses 1916-17' Colour scheme from 'Fighters 1914-19. page 34.
As I've said, the model is not true scale, and also has a mixture of features of the various Halberstadt D-types, hence why I call it a 'scout', rather than a particular D-type . . .
cheers,
Robin.
