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HelicopterMain Discussion › Repair stripped hole in plastic?
02-19-2011 05:40 PM  6 years agoPost 1
kruuuzn

rrKey Veteran

Traverse City, MI

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What's the best way to repair a stripped hole in a plastic component?
I've got a bad hole in the fan shroud of my 600 nitro.

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02-19-2011 06:06 PM  6 years agoPost 2
Foz

rrApprentice

Earth

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Depending on how badly it is stripped; sometimes you can put CA on the screw or in the hole.

Foz

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02-19-2011 06:14 PM  6 years agoPost 3
AirWolfRC

rrProfessor

42½ N, 83½ W

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Use a larger screw.

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02-19-2011 06:16 PM  6 years agoPost 4
Mr. foambuilder

rrNovice

Clovis,NM. USA

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stripped hole

Try putting some CA in the hole, and then a hardwood toothpick in as tightly as you can. If it is a self tapping screw, just drill a very small pilot hole, and if it is a machine screw drill a slightly larger hole, and screw it in. Once in, remove and put some thin CA in the hole and let it set up, then re insert screw, and be careful not to overtighten. Have fun Roy

Ancient flyer AMA 8045
Contest Director
Destroyer of any thing that flies

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02-19-2011 06:16 PM  6 years agoPost 5
wrongler

rrProfessor

Brewerton, New York

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you can use epoxy also

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02-19-2011 06:33 PM  6 years agoPost 6
deepdiver8055

rrNovice

Tallahassee, Fl.

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yes epoxy works very well.

Here's what I do... use some 10 minute epoxy, coat both area's Inside the hole and the screw.

Now this is where you have to pay attention.

Right before it starts to set up go ahead and install the screw in the hole and let the epoxy run out and wipes it clean. Now just before the epoxy hardens unscrew the crew very slowly and hold on to it until the epoxy hardens up.

What your doing is timing it so that when you take the screw back out it will leave nice new threads inside the hole and whatever is left on the screw will be like new threads too. You wait for this to set up so you can still remove the screw but waiting just before it hardens up will keep the *epoxy threads* in tact so they won't deform from the epoxy being too soft. See what I mean?

Then once everything has set you can now use the screw as normally.

Be sure to put the screw down on Wax Paper while you wait for everything to set up and dry.

This is why I use either 5 min or 10 minutes so it won't take all day.

Be sure the epoxy is mixed 50/50 this is critical, if not the epoxy can flake or chip away after a while... epoxy get's brittle if not mixed right.

Hope this helps.

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02-19-2011 06:46 PM  6 years agoPost 7
sonnyhad

rrProfessor

Holland,Mi

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You know all those ends from the zip ties you cut off? Stick the small end of that in your hole and put the screw back in. That's it. Even works with machine screws!

Bald Pilots usually wear hats!

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02-19-2011 07:33 PM  6 years agoPost 8
BLUETHUNDER

rrVeteran

Glass City

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Try JB Weld regular formula to repair a strpped hole in plastic.
JB Weld the HandyMan's Secret Weapon!
http://www.jbweld.net/products/jbweld.php

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02-20-2011 04:40 AM  6 years agoPost 9
FLYINFOOL

rrKey Veteran

Cudahy, WI

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If the hole is for a machine thread screw, I put in a Heli-Coil.
If the hole is for a self tapping screw, I put a light coat of oil on the screw and then glue the screw into the hole with JB Weld regular in the hole. The oil will let you get the screw back out. Be sure to use brake cleaner or something similar to get all oil out of the hole first, especially if it is a nitro.


Jeff Borowski
RAMS Club President
www.ramsrcclub.com

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02-20-2011 12:13 PM  6 years agoPost 10
helismash

rrKey Veteran

Gloversville, NY -​Fulton

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+1 on the JB Weld. Easy and effective.

Hey, Who put the ground there!
T-Rex 500/T-Rex 600N FBL/T-Rex 600E PRO/T-Rex 700N/T-Rex 700FBL

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02-20-2011 01:03 PM  6 years agoPost 11
AltecLansing

rrElite Veteran

North Carolina

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I suggest buying a new fan shroud. I know its not a major component on the heli, but its the best for just installing a new one and forget it. Other than that, use a bigger screw that fills the hole.

Man, I miss the eighties.

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02-20-2011 01:54 PM  6 years agoPost 12
BarracudaHockey

rrMaster

Jacksonville FL

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Deepdiver.

If you use epoxy (I use something called Epo Grip which works even better) you can coat the screw in WD40 and install it while the glue is wet. When it dries just unscrew it and you'll have a treaded epoxy hole and the glue wont stick to the WD40 so the screw will come right out.

Andy
AMA 77227
http://www.jaxrc.com

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