I’ll will enjoy seeing this build, Hugh.
Kevin
Me too Kevin.
Lets talk about rib stitching.
Rib stitching has one and only one use. It stops the fabric covering from lifting from the ribs and ballooning, thereby changing the aerodynamic characteristics of the flying surfaces. For an example of how drastically this can happen, it's worth looking into the early development of the spitfire and what happened to elevators and ailerons in high speed dives.
On the allied machines, the format of the stitching was pretty standard, and varied only a little depending on manufacturer. The appearance to the naked eye is a thread running cross wise over the top of the wing rib, and the same on the underside of the rib, but with the thread also running along the underside of the rib to the next stitch.
So the construction was, timber rib, along which was run a strip of reinforcing fabric, over witch was layed the Irish linen covering, then another reinforcing strip, the stitching and then a wider strip of fabric to cover the stitching. The top strip was from from fabric with frayed edges (later pinked edges).
The thread itself was about 1/16" diameter. So even if a knot were visible, the fabric covering would protrude at most 3/16" from the surface.
Now I don't want to sound like I'm being overly critical here. Eduard have given it a red hot go at recreating this feature, but to my mind, they've seriously overdone it.
I've measured the height of the feature at various points over the upper wing and got between 0.008" and 0.011" height from the surface of the wing. This scales up to between 3/8" and 1/2"!!! It's very obvious in images of other builds I have seen elsewhere.
The upshot is, that I'm going to be removing this feature, or at the very least toning it down. I haven't yet decided whether to scrape the feature off with a scalpel blade, or sand it off with an emery board. I might need to experiment a little. But the end result will be that the stitching will be more to scale... I hope.
The stitching on the sides of the fuselage is quite well done, and I think I can live with it.
Cheers,
Hugh