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raymondj(at)frontiernet.n
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 Posted: Thu Apr 05, 2012 7:56 pm Post subject: OT: low voltage bulb base *NOT LAMP HOLDER* |
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Greetings,
I finally got around to further attempts to salvage lamp bases. I tried
every solvent I had on the shelf. From water to acetone to MEK. The
bulbs were soaked for about a week in each. No luck with any of them.
I was able to heat the base enough with a propane torch to knock the
bulb and base apart.
Here's how:
Warning: Life is dangerous, even more so if you're dumb.
Advice: Don't be dumb.
1. Break the bulb. I heated a complete bulb and the glass actually
melted and popped a hole.
2. Grip the stalk that sticks up in to the bulb to hold the filament
with pliers. This method will not require that the pliers be exposed to
heat. The other method, if the stalk is missing, is to grip the base at
the bottom so it is not crushed when the bulb comes out. Use pliers
that you are willing to have heated and the temper removed from them.
Heat the base, being sure to melt the solder in the the contact(s) on
the bottom and the spot of solder on the side of the base where the
glass meets the base.
3. When smoke comes from around the bulb, tap the pliers on a hard
object with the base pointed down. The base should pop right off. If
not repeat the heating/tapping cycle until the base pops off. If you
are holding the base, point the base up and do the heating/tapping
cycle. This method can be used if the base is not coming off easily
because the remaining part of the bulb weighs more and exerts more force
when the tapping is done.
The base will have some charred glue in it. I have chosen not to worry
about it and just pot the new LED bulb base with E-6000.
I found some bases at the link below, which seem like the way to go if
the bases they offer are the ones you need.
http://www.superbrightleds.com/cgi-bin/store/commerce.cgi?action=DispProds&product=CAR&utm_source=googlebase&utm_medium=base&utm_content=BAY15D-EB&utm_campaign=GoogleBase&gclid=CNSE6pTIn6oCFdBrKgod91Em5w#BAY15D-EB
Raymond Julian
Kettle River, MN
"And you know that I could have me a million more friends,
and all I'd have to lose is my point of view." - John Prine
On 03/03/2011 06:43 PM, rayj wrote:
| Quote: |
Bob McC,
I hadn't tried dissolving the glue. I assumed that it wouldn't be easily
dissolved. I'll definitely try soaking not only in water but some more
aggressive solvents, might also try heat. Thanks very much for the
suggestion. I'll report back when I get some time to try it.
Raymond Julian
Kettle River, MN
On 03/03/2011 09:39 AM, Bob McCallum wrote:
> Raymond;
>
> You should be able to source complete bulbs for pennies a piece and
> although you said removing the glass bulb is a pain, if you soak them in
> water, the glue usually degrades enough that removal is fairly easy.
> After that just clip off the leads and you have the bare base which you
> want. No need to break the glass in most cases.
>
> Not what you asked for but maybe a solution to your problem.
>
> Bob McC
>
> > Date: Wed, 2 Mar 2011 22:59:18 -0600
> > From: raymondj(at)frontiernet.net
> > To: aeroelectric-list(at)matronics.com
> > Subject: OT: low voltage bulb base *NOT LAMP HOLDER*
> >
> >
> <raymondj(at)frontiernet.net>
> >
> > do not archive
> >
> > Does anyone know of a source for the part of a bulb that is the base.
> > The piece that the glass is mounted into and has the electric contacts
> > on it.
> >
> > I'm thinking about fabricating LED replacements for some low volt/DC
> > incandescent. I know they are for sale but expensive and the process of
> > removing the glass and the filament to reuse old bases is a pain.
> >
> > Thanks for any help.
> >
> > --
> > Raymond Julian
> >
> >
> >
> >
>
> *
> *
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Bob McC
Joined: 09 Jan 2006
Posts: 258
Location: Toronto, ON
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| Posted: Fri Apr 06, 2012 7:31 am Post subject: OT: low voltage bulb base *NOT LAMP HOLDER* |
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Raymond;
Here's a link to a fairly extensive selection of both empty bases and also
bases with wire leads in place of the lamp element. Scroll waaaay down for
some of them.
http://tinyurl.com/7mmne4u
Bob McC
[quote] --
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_________________
Bob McC
Falco #908
(just starting) |
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