Hello,

I am building the LT-40 and just preping the wing to cover it. There are SMALL little gaps in between the W5 W4 ect. and the trailing edge. What should i fill this with?? Medium CA??

-Tanner

if you have good glue joints. use wall spackling. get the kind that applies pink but turns white when dry. It is real easy to to sand. i used it on my super sportster and it worked well.

I used the hobbylite balsa filler. Is the spackling light?

I live out in the middle of no where. My only place to go without driving an hour was Walmart. I just used plain ole wood fillter. It seemed to work ok also.

If you are worried by structural integrity the anally retentive method is to cut and sand shims of balsa to fill the gaps. Once positioned use thin CA to cement or if allergic coat with wood glue then position. Cut off any excess with sharp hobby knife and sand flush.

Cheers,

Colin

Yea, i am just getting tips on what to do. I was going to use hobbico balsa wood filler. But i was told that it isnt that strong. and should use ca. but im not too sure how good medium ca would do, because it might just run out of place....

I have been using Gorilla Glue (polyurethane glue) for things like this. They say it is not for gap filling but I find it to be very strong. It foams up to 4 times its volume as it dries and fills small gaps excellently. It has excellent coverage, is quite light and sands very nicely. It is a slow drying glue. I use it at the end of a building session and let it dry overnight. It also works very well for repairs on foam planes. I use a light spackle over it for surfaces that will receive covering.

Why does it need to be strong? I only use it to get a smooth finish to make the covering look better. I didn't have any large gaps anywhere on my kit.

Actually, medium or thick CA should fill the gaps and stay in place. The medium is relatively thick, and won't really "run". Probably stronger than wood fillers too.
Dennis-

Zetor - The spackling I use is very light and I like the fact that it dries white to let me know when to sand. I believe it is made by DAP. I used it on my plane and my dad has used it on other planes without any noticable weight gain. If he is using it to fill small gaps he shouldn't have to use too much of it anyway.

It sounds to me like you live in paradise. I would trade you.

Alright, thank you all very much.

I will try to use some of the ca then. I want it strong because it is on the wing too.

I like it because its 15 minutes from where I work. It is peaceful, I like it. Sure wish there was a club close though.