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1. 03:46 AM - Re: Deburring ribs, spar, channels and wing skins RW (MacDonald Doug)
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| Subject: | Re: Deburring ribs, spar, channels and wing skins RW |
Perry, burrs are a sharp edge and provide a point which could become a stre
ss riser and potentially lead to a crack.=C2- In other words, get rid of
them all.=C2- I am a bit obsessive about eliminating burrs and sharp edge
s=C2-on my projects.=C2- Fortunately, the 6061T6 which Zenith planes ar
e made from is fairly easy to eliminate burrs.=C2- Rather than using the
time consuming method of going over every hole with a larger drill bit or w
ith a de-burring tool, you can easily de-burr using a file.=C2- I found a
nice little vixen file at Princess Auto in their autobody department.=C2
-=C2-The file=C2-is about a one inch square of file blade attached to
a small wooden block.=C2- The file's intent is for removing small lumps
in automotive body filler but is works great on aluminum.=C2- I also used
a six inch fairly fine file to clean up the edges of the parts.=C2- Basi
cally, when the part is de-burred acceptably, you should be able to run you
r bare hand over any portion of the part
and not get cut.=0A=C2-=0AHope this helps=0A=C2-=0ADoug MacDonald=0ACH
-701 from scratch=0ANW Ontario, Canada=0A=C2- =0A=0A_____________________
___________=0A From: Perry Delano <pdelano@telus.net>=0ATo: zenith701801-li
st@matronics.com =0ASent: Sunday, June 9, 2013 11:54:00 PM=0ASubject: Zenit
h701801-List: Deburring ribs, spar, channels and wing skins RW=0A =0A=0A
=0AHi all,=0A=C2-=0AIs there a rule of thumb for deburring on a CH-701. I
s a vixen file the best, flat file or should one go lightly with a counters
ink bit or large drill bit. Is it enough to do under the factory head and b
etween mating surfaces or does one have to remove the burrs from every side
, even where the shop head of the rivet will contact. The building standard
s say to ensure not to counter sink holes and a flat file may pull material
into the hole but I don=99t believe it describes how best to do this
work. I have done all the drilling on the upper and lower wing skins for t
he right wing and started deburring when I thought, I=99d better see
what others on the list have done.=0A=C2-=0ARegards,=0A=C2-=0APerry =0A
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