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Old Jul 07, 2016, 11:52 PM
the_gr8t_waldo is offline
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type of sewing thread for control surfaces

I starting a FT Simple Soarer . only I'd like to sew on the control surfaces rather what the plans calls for. kinda zeroed in on sewing. hot glue small sections of BBQ skewers to the mating pieces and lacing between the two for the actual hinge. ( seems the lightest and least friction) but a bit stumped as to what thread other use for this. common sewing thread seems to be too lite for the task, and waxed thread, way over board. is there something easier to work with other than sewing thread, or the heavy waxed thread?
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Old Jul 08, 2016, 02:47 AM
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Not quite 100% understand what you mean but I have been using un-waxed dental floss for stuff like this recently. Cheap, light, strong and you can add a drop of Cyno to turn it into concrete when required.

Paul
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Old Jul 08, 2016, 05:36 AM
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Button and carpet thread ... Heavier than regular thread , available everywhere..
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Old Jul 08, 2016, 06:33 AM
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I use Kevlar Thread from "thethreadexchange.com"

Zero stretch and it's strength is legendary
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Old Jul 08, 2016, 06:51 AM
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I second the dental floss choice. It provides almost no resistance in a figure-eight, or baseball stitch hinge - and would add almost no weight. I used it exclusively for control line hinges back in the day - waxed and un based on what I could find in the medicine cabinet.

P.S. I like the idea of filling the scooped-out LEs with something round and more LE-like. A balsa dowel would be the cats pajamas.
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Old Jul 08, 2016, 09:43 AM
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I use saddle thread, I got it at Harbor Freight, but it's discontinued. I have three rolls, life time
supply.

It's like carpet thread.

You can see it here

wasp system test (1 min 8 sec)
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Old Jul 08, 2016, 11:06 AM
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Quote:
Originally Posted by gpw View Post
Button and carpet thread ... Heavier than regular thread , available everywhere..
Ditto!

Ken
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Old Jul 08, 2016, 12:14 PM
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lots of good ideas... thanks all! I'm going to use unwaxed dental floss, strictly because I have some on hand. if this works out, at some point in the future I'll order a small spool of the Dupont K. I haven't consider the leading edge treatment as suggested- I'm going to try it this time. just to see.
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Old Jul 08, 2016, 12:41 PM
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One thing, monofilament is heat sensitive. Just in case you ever think about using it. Some kits
have it included.
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Old Jul 08, 2016, 02:00 PM
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Doh!, I posted a different version of hinging in an old thread, instead of here ---

Link to post --- http://www.rcgroups.com/forums/showp...7&postcount=32


Ray. (It's an age thing )
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Old Jul 09, 2016, 09:28 AM
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Are we talking about two different things; hinges and pull-pull surfaces?

I use Kevlar thread for one but never for the other.

Did I fall asleep at the keyboard again and miss something. Dang, I hate when that happens.

TTFN
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Old Jul 09, 2016, 10:48 AM
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sorry I was a bit unclear.... thinking/asking about hinges. that monofilament fishing line hinge looks promising and got me to thinking. has anyone looked into using smallish strips of "mylar drawing paper" for this? I have a small piece of this paper and have been mulling over it's use as an hinge....I see that someone's already touched on this approach and , once again, I'm late to the party.
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Old Jul 09, 2016, 08:57 PM
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I'm finding Unwaxed Dental Floss to be * difficult* to source.
Shopkeeps keep saying that it's extinct.
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Old Jul 17, 2016, 12:49 PM
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short update

I've completed the hinges, and they look and feel great to me ( complete nob, but learning) I used dental floss I had kicking around . unwaxed free samples given to me by my dentist. apparently they are no longer making that brand- a shame since it was totally unwaxed and more a "ribbon" than thread. fwiw, I ran out just before tackling the last hinge and had to find some more thru the normal supply places. found out that most do come with some level of wax, even though the labeling didn't say "waxed". I did find some unwaxed at the local supermarket...... the brand was the store's product line . in this case the store was Safeway and their product line was "Signature". You'll probably find something comparable in your local area.
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