I am confused by the Mod61A instructions. If I understand it correctly,
the probe tube is meant to go through the spar, penetrating the
trailing and leading rib flanges. So, what exactly is the purpose of
the welding rod? Since this is a flexible wire, it is going to flop
around as you feed it in. Furthermore, the instruction says the wire
will put a mark into the leading edge of the rib flange. How is this
wire supposed to put a mark? Even if it did, its not going to be
visible anyway from outside the wing skin. Ami I the only one who found
this very confusing??
Thanks!
Andrew Sarangan
http://www.sarangan.org
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