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› Bad idea of the week
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Bad idea of the week (Read 3232 times)
applehoney
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Posts: 164
Location: Ajax, Ontario
Joined: Jun 25
th
, 2013
Re: Bad idea of the week
Reply #5 -
Mar 30
th
, 2014 at 1:08pm
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> Maybe a jig of some type?
No jigs. All I've ever done in 70 years of building is to take the required length of strip, a new #10 blade, and carve the strip down to a triangular section in my hands. It can be taken down very finely so as to require a minimum of sanding (across grain) when the panel or wing is completed.
Sanding the TE lengthwise compresses fibres and induces bowing
Commercial 'trailing edge' stock usually has a distinct thickness at the 'narrow' edge so still requires further carving even though some of the bulk stock had been removed.
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Sky9pilot
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Stick & Tissue
Posts: 13264
Location: Kelso, WA 98626 USA
Joined: Jan 9
th
, 2010
Re: Bad idea of the week
Reply #4 -
Mar 30
th
, 2014 at 12:35pm
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Robert.... some guys use music wire taped to the building board with the balsa between the wire. 1/16 and 1/32 wire sanding the balsa to the 1/32 trailing edge. Using thicker wire for leading edge as needed. Sanding with a sanding block.
Others place sand paper down to hold the balsa and place at edge of the building board and sand with block to desired thickness at trailing edge.
Some sand the built wing panel by placing 2" masking tape infront of trailing edge, span wise from root to tip and using a long sanding block sand trailing edge. Tape helps to keep from nicking the ribs and protect the ribs as the trailing edge is sanded.
As has been stated trailing edge is tapered before construction is started. Lots of choices, whatever works for you!
Tom
If God is your Co-pilot...switch seats...
Your attitude will determine your altitude!- John Maxwell
And ye shall know the truth, and the truth shall set you free. Jn 8:32
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Robert Hudson
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Build! Fly! Enjoy!
Posts: 128
Joined: Feb 7
th
, 2014
Re: Bad idea of the week
Reply #3 -
Mar 30
th
, 2014 at 12:16pm
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applehoney wrote
on Mar 30
th
, 2014 at 8:38am:
I taper TE's before building wing panels No troubles ....
I've been thinking in that direction as well. Maybe a jig of some type?
Tissue!
Gesundheit...
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applehoney
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Posts: 164
Location: Ajax, Ontario
Joined: Jun 25
th
, 2013
Re: Bad idea of the week
Reply #2 -
Mar 30
th
, 2014 at 8:38am
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I taper TE's before building wing panels No troubles ....
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bigrip74
Ex Member
Re: Bad idea of the week
Reply #1 -
Mar 29
th
, 2014 at 11:27pm
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OUCH!
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Robert Hudson
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Build! Fly! Enjoy!
Posts: 128
Joined: Feb 7
th
, 2014
Bad idea of the week
Mar 29
th
, 2014 at 11:23pm
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Using a long strip of double stick tape to hold a wing down while tapering the trailing edge.
Results: 2 breaks in the T.E. while unsticking it and a ragged edge on the T.E. as I thinned it too much.
2 small pads might have been a better idea!
Weighing my options among rebuilding the whole panel or just grafting on a new piece of wood. Not a stupendous amount of work in either case.
Tissue!
Gesundheit...
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