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Building Tips and technical articles. => Building techniques => Topic started by: DanielGelinas on December 10, 2013, 12:42:53 PM
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Hi Guys,
I'm installing cap strips for the first time. Is there a trick (glue?) tat will permit the cap strips to hold down quickly? I tried ambroid but the ends always want to curve back up. HB~> CA thick seems to work although I have to hold down for over a minute...
Do you crush the capstrips on one side so that they hold their curve? :-\
Thanks!
-Daniel
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Don't crush them. I use thin CA for capstripping. I put the forward end in place, CA it, and then run the strip down along the rib with my fingers with the capstripping side down so I can drizzle a LIGHT drop of CA to the rib and strip. Ya don't need much, as you'll see the glue wick along the strip for a long distance.
Yes, you will get some glue on your fingers. Yes, you might very well glue you to the wing, but no, it ain't permanent and yes, you can (carefully) get loose. Have fun with it, and keep in mind that the better the strips fit the leading and trailing edges the lighter and nicer the wing will be. Take your time in fitting the length of the strips.
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I use titebond on the ends of the cap strips because you will most likely need to sand them flush ,, even if minutly the CA can make it a challange,, I use thick or medium CA on the edge of the rib,,The CA on the rib kicks holding it in place while the titebond dries,, the cap strip must fit as precisly as possible,, another trick, when I put my leading edge sheeting on, I leave about 1/32 of the spar exposed for the cap strip to lay on. It helps to align the cap strip with the sheeting
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The cheap one-use plastic gloves like the Subway sandwich people wear don't stick to ca glue. I got mine from the dollar store. They are great for holding pieces that you are spray painting, too.
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I just do what Bob Hunt do and wrap tape on my fingers, just like making sheets for foam wings.. n~
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I use Elmers white glue almost everywhere when building a model with just a few exceptions and this is one of them. Cut your cap strips one at a time to fit. I use thick CA and run it lightly along the top of the rib. Then place your cap strip on the center of the rib and hold down for a few seconds using very minimum pressure till the CA kicks. I have broken ribs in half by pressing down too hard and this makes me say dirty words.
MIke
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I use Elmers white glue almost everywhere when building a model with just a few exceptions and this is one of them. Cut your cap strips one at a time to fit. I use thick CA and run it lightly along the top of the rib. Then place your cap strip on the center of the rib and hold down for a few seconds using very minimum pressure till the CA kicks. I have broken ribs in half by pressing down too hard and this makes me say dirty words.
MIke
LL~ LL~ That's funny!!
Thanks for the tips Guys! I have four more cap strips to go. Then I glue the two half wings together.
Kind regards and have a great christmas season!
-Daniel
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In free flight models, when we still used to glue the carbon cap strips to the balsa ribs, we used clear sellotape to hold the strip to put&hold it in place. Very easy and no mess with glue!
It's no longer used in serious FF but works well with all-balsa construction.
L
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This trick I learned fro, my free-flight days.
1. Cut the cap strip to length
2. Lick the top of the strip and wait about 30 sec. It will begin to curve (because the ribs are curved)
3. I generally use Ambroid (because it sands well)
4. Use one pin at each end, and make sure the middle is well down. If not, use a pin in the middle.
Floyd