[Noisebridge-discuss] Type K thermocouples and/or wire

[Jake]

No i was just going to stick it on there, on the outside, running down the 
line cord, steampunk style.  Of course someone will have to do that navy 
wiring harness weave thing with some appropriate string:

http://www.matronics.com/aeroelectric/articles/cable_lace/Running_Lace.gif

http://www.neufeld.newton.ks.us/electronics/?p=1091

but only if i get some damn thermocouples or thermocouple wire!  hello?

-jake

On Sun, 21 Nov 2010, Jonathan Foote wrote:

> Wow, that's punk as fsck. Are you going to drill out the tip for the
> thermocouple?
>
>
> On Sun, Nov 21, 2010 at 2:06 AM, Jake <jake at spaz.org> wrote:
>> i thought of this already, my plan is to rectify the primary of the
>> transformer of a laptop adaptor, which could be over 200v.  a radio shack
>> 30w iron could take 50w no problem if its not over temperature.
>>
>> this is where the thermocouple comes in, although a platinum sensor like
>> some wellers would be nice because it acts like a simple thermistor.
>>
>> i just bought a PID controeler for a type-K thermocouple before i realized
>> that my new weller iron uses a platinum thermistor, so... we could put it on
>> the toaster if i had a thermocouple.
>>
>> i also have this old Omega tpye-K heater controller with no docs, i usedit
>> with this iron that had a type-K that died.  i dunno.  its hard to find docs
>> for these thermocouple controllers sometimes.
>>
>> right now i am making a power supply for my weller EC3001 i think, out of an
>> old ibook adaptor.. ill instructable it or something.
>>
>> -jake
>>
>> On Sat, 20 Nov 2010, Jonathan Foote wrote:
>>
>>> A good temperature-controlled iron has a beefy heating element: this
>>> is why it heats things up much better, but it will also quickly burn
>>> out if run open-loop. Cheap pencil irons are basically underpowered by
>>> design so they won't burn up (this is why pros avoid them). So there
>>> is little point trying to retrofit those unless you upgrade the
>>> element as well, which means you'll need to add insulation, and good
>>> thermal feedback, and heat-rated wiring, and...
>>>
>>> If you are keen on this how about retrofitting the reflow toaster oven
>>> with a PID temp controller
>>> http://www.omega.com/ppt/pptsc.asp?ref=CN7500
>>> or building a hot plate a la Mightyohm?
>>> http://mightyohm.com/blog/2009/01/diy-pid-controlled-soldering-hotplate/
>>>
>>> Another fun project might be to make a spot welder. Could probably use
>>> a microwave transformer in reverse...
>>>
>>>
>>> On Sat, Nov 20, 2010 at 4:32 PM, Jake <jake at spaz.org> wrote:
>>>>
>>>> does anyone have any type-K thermocouples and/or type-K thermocouple wire
>>>> i can have?  I am making temperature controlled soldering irons,
>>>> hopefully
>>>> we an also retrofit all the irons at noisebridge too eventually.
>>>>
>>>> also if you have access to a thermocouple welder then we can make
>>>> thermocouple junctions from wire.  I have a whole roll of type-T...
>>>>
>>>> thanks
>>>> -jake
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>>
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>