I was reading where some have used some threadlock on some screws . May be my misunderstanding but I used on my Pandora landing gear . Got up this morn to finish and it ate thru the plastic . The screws just pull straight out . Any help out there ?????
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But Crashing is Landing -
Re: Threadlock ate plastic
Use threadlock on metal-to-metal. There is a plastic threadlock you can get at hardware stores that can be used. -
Re: Threadlock ate plastic
Hard to call without knowing more details. I'll offer this as a possible fix - which I think you're looking for.
If foam or soft wood (eg balsa) is involved, use a larger screw. Turn it in, 'cutting' new threading, & remove. 'Paint' inside with foam-safe CA, without kicker; allow to dry naturally. This'll help harden the new threads, & hopefully you'll be good to go. Much of this (as a fix) will depend on what type of loads or shock loads will be placed on the repair.
2nd course - MRC carries replacement parts for all planes they carry, so they say. Get the one(s) needed & start over.
I'll add - most folks I've seen, apply much more LocTite than is needed. Apply only the smallest drop possible to the threads near the tip of the screw (I use a toothpick), and as you screw it in the LocTite will be spread by the screw itself across the receiving threading. The trick here is to stop the initial unscrewing caused by vibration or whatever - and that's what Loctite does. This also makes the screw easier to remove 'if & when' without causing deformation or tearing of the surrounding media.
A little goes a long way! Also, use blue if you plan on ever removing the screw; red is much more permanent.Comment
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Re: Threadlock ate plastic
About Threadlock - as you found, you never want to get blue thread locker anywhere near plastic. You only want to use it where metal on metal is involved such as a motor to a metal X mount. Wait until it is 100% dry before going anywhere near the plane. We've seen a number of really nice planes destroyed because blue thread locker was used on wing bolts which screw into plastic. I'm glad this was posted because this is a great PSA.
As fox the fix, StarHopper offered some good advice about using CA.Comment
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