Contact Restore

[OG]

Again ... AA leaked ... Duracell (crap) too many times experienced
Duracell leaking.

Cleaned the contacts with a diamond tip rotary tool.
Nice and clean and shiny now.

But, wondering what might be a good way to protect the contacts.

1) solder tin - contact on plastic so will probably melt the plastic
2) lay on gold leaf - will it stick well enough?
3) leave it alone - until next time

I can do either but not sure what works best.

Suggestions please.

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On Friday, May 20, 2016 at 2:00:57 AM UTC-4, OG wrote:

Again ... AA leaked ... Duracell (crap) too many times experienced
Duracell leaking.

Cleaned the contacts with a diamond tip rotary tool.
Nice and clean and shiny now.

But, wondering what might be a good way to protect the contacts.

1) solder tin - contact on plastic so will probably melt the plastic
2) lay on gold leaf - will it stick well enough?
3) leave it alone - until next time

I can do either but not sure what works best.

Suggestions please.

--- news://freenews.netfront.net/ - complaints: news@netfront.net ---

In the future, try swabbing the schmutz off with plain old water. That removes the deposits better than any chemical you can try. If you get to it fast enough, the plating is often still good. Once you abrade it, you lose the plating.

I have an old Emerson transistor radio that had it's contacts ground down. I ended up soldering to the metal for strength and put the batteries in with a coating of dielectric grease. Never a problem between battery changes.

 

[whit3rd]

On Thursday, May 19, 2016 at 11:00:57 PM UTC-7, OG wrote:

Again ... AA leaked ...

Cleaned the contacts with a diamond tip rotary tool.
Nice and clean and shiny now.

But, wondering what might be a good way to protect the contacts.

I've tinned with tin/silver solder, but it's hard to get good coverage. Sometimes
takes acid flux, and you have to spend some time and effort cleaning
up aferward.

For coil springs, I've bent new ones from bronze music wire (about 0.020 to 0.030" diameter).
And for leaf springs, you can buy springy bronze sheet as a kind of shim stock

<http://www.mcmaster.com/#9020k11/=12hu737>

which, with some effort, can be formed appropriately.

 

[Wond]

On Fri, 20 May 2016 11:12:35 -0700, whit3rd wrote:

On Thursday, May 19, 2016 at 11:00:57 PM UTC-7, OG wrote:
Again ... AA leaked ...

Cleaned the contacts with a diamond tip rotary tool. Nice and clean and
shiny now.

But, wondering what might be a good way to protect the contacts.

I've tinned with tin/silver solder, but it's hard to get good coverage.
Sometimes takes acid flux, and you have to spend some time and effort
cleaning up aferward.

For coil springs, I've bent new ones from bronze music wire (about 0.020
to 0.030" diameter). And for leaf springs, you can buy springy bronze
sheet as a kind of shim stock

http://www.mcmaster.com/#9020k11/=12hu737

which, with some effort, can be formed appropriately.

And, once again, we spend ten bucks on material, fifty labour,
on the thing we got for $2 at a yard sale!