Fisher 1280X epoxy repair question

[Ev from somewhere]

while soldering a new battery connector I melted the housing where the battery compartment cap clamps and seals. I melted it back into shape so only a few drops of water got inside when I tested it in the sink( no batteries installed).
My question is what is the best epoxy for sticking to this plastic and filling a pin hole? What type of plastic is the housing?

Thanks
Evan

 

[Sven]

5 minute epoxies are not waterproof.
In general epoxy does not contain U/V inhibitors. It will eventually turn yellow and breakdown, if not topcoated with lets say paint or varnish....
Probably not the best choice to use.

Better choice would be aquarium silicone put a dab on the inside and outside where it leaks from. Just do not seal up the unit before the silicone cures.
It does give off acetic acid vapors that could damage electronic components with corrosion of solder joints.....

One of the best adhesives I found is PFM, it will not melt plastic like many others.
Apply it as the silicone.

PFM glues anything to anything!
PFM is a one part, quick setting adhesive and sealant that glues just about anything to anything else. It will melt foam however. It sets in about 30 minutes. PFM sets but doesn't get brittle; it will give without letting go. PFM is non-flammable. PFM can repair electrical insulation, give strain relief to electric connectors, glue servos in place, glue servo trays and bulkheads in fiberglass fuselages. PFM is the indispensable glue in your workshop, thousands of uses and counting.

I believe the only place you'll find it is at:
http://www.hobby-lobby.com/p.f.m_adhesive_sealant_3.7_oz_2851_prd1.htm
It's one of those products, once you have tried it, you'll never be without.

 

[Ev from somewhere]

maybe I will put a "patch" over the area with that and a piece of plastic.
Thanks

 

[Sven]

maybe I will put a "patch" over the area with that and a piece of plastic.
Thanks

No need to put a plastic patch on it. Just a good dab on the outside and a dab on the inside, should do the trick.
If possible try to get some to squeeze thru the hole before dabbing.

 

[Capt Bob]

Shoe Goo may work - used on running shoes - easy use and you can keep it in your car for any other water proof problems - Bob

 

[Ev from somewhere]

http://www.bsi-inc.com/Pages/hobby/ca.html

found it at the local hobby store.



MAXI-CURE

 

[Sven]

Supposedly waterproof. But, brittle when cured, which could make the joint fail after awhile.
It's great stuff when used as it was intended to be made for.
http://en.wikipedia.org/wiki/Cyanoacrylate

I have used CA extensively for over 20 years for fast construction and repair of wooden model boats and model airplanes.
I would never use it to repair an metal detector used for water hunting, even tough they now make a flexible CA glue.
http://www.mercuryadhesives.com/MercuryFAQ.htm

Shoo goo does have solvents in it that will dissolve certain plastics.

 

[mcseeker]

Loctite ( plastic padding ) marine epoxy might be good. Waterproof, tough and good for fixing and protecting coils too