Get the bends easily - RCCanada - Canada Radio Controlled Hobby Forum
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Old 08-29-2009, 07:58 PM   #1
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Location: noosa australia

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Post Get the bends easily

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I am building a k504 from an upscaled 1936 plan for a rubber band operation model which will obviously have a decent nitro engine .
The plan is only being followed in outline only and novel ways found to get the right effect ... one of them being sheeting the fuselage with 1.5mm balsa where the curves are not steamed but pre-bent by by rolling with a a length of water-pipe with the balsa sheet on soft carpet so the balsa takes up an exagerated bend which only requires holding down when glue-ing.
Another trick is to use MDF glue as used by kitchen cupboard manufacturers.
It's white .. sets quickly in 20mins and dries sandable.
Tony lurie
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Old 08-30-2009, 11:08 AM   #2
I am: Cedric V.
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Location: St. Marys, Ontario N4X 1C1

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Re: Get the bends easily

Neat idea cobber! You could also make the curved fin, rudder and stab outlines using the glued laminations idea, I've seen done - it gives you a nice strong outline and only needs a cardboard outline to mold it over while the glue dries. Have you met it before? Even use slightly thicker ribs within the framework to give a bit of symetrical section to it, depending on the full size aeroplanes's aerofoil sections. Nice project - how about electrocuting it??
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Old 08-30-2009, 04:57 PM   #3
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Re: Get the bends easily

Too difficult for me ... I will always take the simplest way of which the balsa bending by roller .... achieves lovely leading edges and and profiles ... Just bend it .. glue it on with a couple of pins to hold it and wait ... gaps that can be seen between former and skin are easily filled with old shoelace or string dipped in glue placed in the gap ... so you dont have to have everything absolutely perfect to achieve a good result.
I like laminating thin balsa offcuts squared of and glued to form a sheet on cadboard carton stock from cereal boxes... recycling to an extreme!
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