On 10/4/2011 12:12 PM, Electron wrote:
> At 01.52 2011.10.04, you wrote:
>> On 10/3/2011 4:46 PM, Bob Blick wrote:
>>> On Monday, October 03, 2011 10:29 PM, "Electron"  wrote:
>>>> Assuming you can still find it (it was recently banned from EU at leas=
t,
>>>> due to suspects of it being cancerous) you can use DCM (dichloromethan=
e),
>>>> usually easily found in paint removers/strippers.
>>> This is good stuff, available locally here in California:
>>>
>>> http://www.coppergreen.com/greensliquid.htm
>>>
>>> Bob
>>>
>> Greensliquid seems to be based on  methylene chloride, which I don't
>> know whether it is the same as dichloromethane, but it sounds similar.
> methylene chloride is the same substance as dichloromethane, different na=
me,
> same thing:
>
> http://en.wikipedia.org/wiki/Dichloromethane
>
>
>> I have some Ace Hardware liquid stripper with methylene chloride, so
>> I'll try it.  Thanks Mario and Bob.
> You're welcome.
>
>
Well, live and learn.  For instance I learned that what looked like a=20
metal box was actually plastic, as the methylene chloride or acetone in=20
the paint stripper dissolved the enclosure, leaving a block of potting=20
and circuitry behind.  It also softened the wiring insulation causing it=20
to puff up and bulge.  What seemed to be a heat sink insulator washed=20
away.  A plastic round 8 pin connector survived.  Electrolytic=20
capacitors have their outer plastic sleeves (the exposed parts of them)=20
melting away.  The potting (probably epoxy?) is still there.  More=20
patience with a dremel and other chemicals may have been the way to go.
I ended up ordering a new 24V 30A motor controller from a Senzhen vendor=20
on eBay for about $30.  It will probably be November before I see it.  =20
EBay item number 260857326542.
Joe W



--=20
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