Just as the title says—
I'm not messing around here.
Using a 6700 rear hub that I received from a customer
with the hub axle and bearing balls removed,
and a discarded rim from our shop,
I built an 8-spoke wheel.
I can't call it a radial laced wheel
because the spoke path deviates from a true radial line
due to the different hole counts between rim and hub.
The reason I'm doing this is:
I want to remove the freebody from the hub shell—
（Shimano's factory probably has a jig for this）
but with just the hub by itself, I can't get enough clamping force
on the hub side when loosening with a 10mm Allen key.
The freebody came off.
Separately, there's a wheel built with the FH-6600,
the earlier version of the FH-6700,
and after about 20 years of use,
the freebody has developed significant play
and the hub rotation sounds gritty,
so the goal is to refurbish the 6600
using 6700 parts.
The left cone/dust cap nut
was the same part except for the finish.
The hub axle—the distance from the end face of the right end nut
to the cone is apparently the same,
but the dust seal position differs.
However, this is due to the difference in seal positioning
on the freebody side, so if I switch to the 6700 freebody,
I just need to also swap the hub axle
for the 6700 one（in the upper part of the image above）.
I'll also replace the bearing balls in the hub shell
with the new ones that came in the 6700 hub.
The left side of the 6600 hub showed damage.
As a result, except for the hub shell left cone which can't be replaced,
everything is now new.
↑My biggest concern was here:
whether the shape of the freebody mounting seat
on the hub shell
had been changed between the 6600 and 6700.
Fortunately, it was the same.
Both hub shells have
a somewhat thick stainless steel spacer
to prevent the freebody from tightening too much,
and the dimensions of this were also the same.
For the story about why Shimano
went out of its way to change the shape here,
（→here）.