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Cutting truss sticks

Old 12-28-2014, 02:32 PM
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swify
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Default Cutting truss sticks

I am going to start building a Goldberg Tiger 60 kit shortly. I was wondering what technique people use for cutting truss sticks for the horizontal stab for example? Normally I just put the stick over the plan and cut to fit but sometimes it's tricky to get the proper angles on the stick so it fits tightly in the stab assembly.
Old 12-29-2014, 12:51 AM
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jeffo
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Lay up the outside of the stab first,mark with sharp pencil where cross members are located.Position your balsa stick where you just marked off.Mark your balsa stick,then cut to line.Usually the location of the sticks are not critical,so if your off a little bit,don't sweat it.The more you do it,the better you get.jeffo
Old 12-29-2014, 04:32 AM
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Originally Posted by jeffo View Post
Lay up the outside of the stab first,mark with sharp pencil where cross members are located.Position your balsa stick where you just marked off.Mark your balsa stick,then cut to line.Usually the location of the sticks are not critical,so if your off a little bit,don't sweat it.The more you do it,the better you get.jeffo

Yup. I agree.

I try to cut mine a little long, and then custom fit each piece.
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Old 12-29-2014, 04:58 AM
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Yeah, I put the stick over the frame that is already there, mark with a pencil, cut long and sand to fit.
Old 12-29-2014, 07:06 AM
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takes about 10 min's to make a cut gage, no guess work then
Old 12-29-2014, 11:19 AM
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Originally Posted by box car View Post
takes about 10 min's to make a cut gage, no guess work then
Got a picture of one of them cut gages?
Old 12-29-2014, 02:33 PM
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I am building a sig stick model right now so it on my work table, so I will take a picture of it and post
Old 12-29-2014, 04:22 PM
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when you draw your line only sand up to the line and check the fitthe green is sand paper to hold the stick in place
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Last edited by box car; 12-29-2014 at 04:25 PM.
Old 12-29-2014, 06:55 PM
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Get three scrap sticks. One stick touches the inner framework each side. The third is pinned to the other two so that the three become one- a sort of 'menage a trois' in the balsa world! Lift off plan and use this to cut your piece! Look at some of my sailplanes like the 1932 Balestruccio which can be found in 'gliders and sailplanes' and tell me I don't know what I'm talking about! lol
Old 12-29-2014, 09:02 PM
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Assuming you're using a razor saw for the cut. Watch the reflection of the stick on the saw. Keeping the reflection on the same plane( not appearing to be bent up or down) will help to maintain a vertical cut no matter the angle.
Old 01-02-2015, 04:43 AM
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I generally cut them close, but a little long. Then I work them on the belt sander until they fit tightly.
Old 01-02-2015, 05:41 AM
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I cut a little proud and then sand to a perfect fit. Get some 10 inch long pieces of 1 by 2 inch lumber (firring strips) and wrap them with various grades of sandpaper. I use 150, 100, and 60.

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