(8-4 step 1):
Tonight I set out to surface prep all the horizontal stabilizer
spars, doublers & spar caps in preparation for primer. For
the rudder & vertical stabilizer we alumipreped & then alodined
all of the pieces prior to priming forgetting that they were
alclad. Remembering it now the plan is to only prime the alclad
parts, so I get to sand them all, trying to be careful not to remove
the thin alclad layer. I started off with one of the stringers...
once it was done I realized I didn't need to do it since none of the
holes have been predrilled yet (that comes later... doh!)
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(8-2 step 4): I
went back to the plans to figure out just exactly what pieces I needed
to do. Here are the two spar doublers, and the spar caps, along
with the flange bearing after they've been scuffed up. The top
stringer hasn't been touched yet and is included as reference... but
after seeing the pic it doesn't make a really good reference!
I'll have to get another one tomorrow.
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(8-5 step 8):
And this is where I'll be leaving off for the night. These
spars have a lot of surface to be cleaned up! For the vertical
stabilizer I scuffed the skins by hand, and wasn't real impressed with
the results. The primer seemed to fragile and actually chipped
off in some places. This time I decided to take a little more
aggresive approach by using either a scotchbright wheel or a roloc disc
on a drill. It seems to work a bit better, although it also
seemed like it took a long time. I guess comparing it to going
through the whole alumiprep/alodine process it isn't all that
bad. I'll finish this spar up tomorrow night.
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