Where to order NICHROME wire?
Several times I have seen nichrome wire in catalogs, but now that I need it
I can't seem to find any. Does anybody know where I can find some? I would
like to experiment with a couple of different gauges in the neighborhood of
28-30 gauge insulated nichrome, around 10 feet of each, and insulated. Can
anybody suggest a source?
Thanks,
--Dan
I can't seem to find any. Does anybody know where I can find some? I would
like to experiment with a couple of different gauges in the neighborhood of
28-30 gauge insulated nichrome, around 10 feet of each, and insulated. Can
anybody suggest a source?
Thanks,
--Dan
Comments
Omega has a good selection of bare nichrome. Good luck!
Tom
On Monday, February 26, 2001 8:23 PM, Dan Gustafson [noparse]/noparse]SMTP:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=NxWJCfQJXCe7VE4CWse2XvMYOQK_7YltNYPaDHbmVBpfsGlbyUbpLpD0lUKcLod9gj_UU2HZkpjfVyRmmQ]dankgus@e...[/url
wrote:
> Several times I have seen nichrome wire in catalogs, but now that I need it
> I can't seem to find any. Does anybody know where I can find some? I would
> like to experiment with a couple of different gauges in the neighborhood of
> 28-30 gauge insulated nichrome, around 10 feet of each, and insulated. Can
> anybody suggest a source?
>
> Thanks,
> --Dan
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
and sealing plastics. www.mcmaster.com has it and all the other hardware.
~\/~
(@ @)
______ooO_( )_Ooo_______________________________________
"If we all did the things that we are capable of doing,
we would literally astound ourselves."
Thomas A. Edison
______oo0_____0oo_______________________________________
Sincerely;
Stephen Holt
http://the-interface.org/
Original Message
From: Dan Gustafson [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=qdNDJqx-ssN3UUUXBAfAlQ0quguLdEjnzbmyEak8lijkh0vDzvJgpAFmSBNdgpWE2XaHhjAlW1aSXQJo6w]dankgus@e...[/url
Sent: Monday, February 26, 2001 9:23 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Where to order NICHROME wire?
Several times I have seen nichrome wire in catalogs, but now that I need it
I can't seem to find any. Does anybody know where I can find some? I would
like to experiment with a couple of different gauges in the neighborhood of
28-30 gauge insulated nichrome, around 10 feet of each, and insulated. Can
anybody suggest a source?
Thanks,
--Dan
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
don't want them blazing hot. I am thinking that I might want to make a
tight coil and non insulated wire would not electrically make a tight coil,
but rather just a chunk of nichrome. I am just experimenting, so a coil
might not even be necessary, but it seems like a good idea in my mind right
now. Any sources of nichrome wire are greatly appreciated. From the looks
of it, McMaster sells ~1000 feet at a time in the gauges I am interested in,
which is far more than I want. I will buy it if I have to, but I know I
have seen smaller amounts for sale in other catalogs. By the way, does
anybody know how to get McMaster to send you a catalog? From what I
understand, it is nearly impossible.
Thanks,
--Dan
Original Message
From: Dream Systems One <dreamsystems@c...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, February 26, 2001 7:17 PM
Subject: RE: [noparse][[/noparse]basicstamps] Where to order NICHROME wire?
> Why would you want insulated nichrome wire? It is usually used in cutting
> and sealing plastics. www.mcmaster.com has it and all the other hardware.
>
>
I have used this type of wire for years in the printing industry. It always
gets so hot that it glows red. Even the ultra high temp insulation melts
after a short period of time. It is always SCR controlled to prevent
electrocution hazard. My designs usually involve a shunt to prevent
electrifying the entire machine if the conductor was to break.
Since I have no idea of what you are trying to heat and how, can I at least
assume you just want a low voltage solution?
If you would please explain to me a few facts then I can help you.
1. What do you want to heat?
2. What temperature are you looking for?
3. What is the temperature response time that you want?
4. Do you intend to transfer the heat through a container or utilizing
direct immersion?
5. How would you like to control it?
6. Will it be an automated repeat cycle or continuous duty cycle?
If you can answer these questions I can help you with your experiment.
~\/~
(@ @)
______ooO_( )_Ooo_______________________________________
"If we all did the things that we are capable of doing,
we would literally astound ourselves."
Thomas A. Edison
______oo0_____0oo_______________________________________
Sincerely;
Stephen Holt
http://the-interface.org/
Original Message
From: Dan Gustafson [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=hprd6bY97n1rZXMSjj0afc4s3ruAXrh9Zj5oet276WoOpZHd5HUp4Coov24mgT4or6vhI91RrNrF0NMsZA]dankgus@e...[/url
Sent: Monday, February 26, 2001 10:26 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] Where to order NICHROME wire?
Well, I want to experiment with making some small heating elements and I
don't want them blazing hot. I am thinking that I might want to make a
tight coil and non insulated wire would not electrically make a tight coil,
but rather just a chunk of nichrome. I am just experimenting, so a coil
might not even be necessary, but it seems like a good idea in my mind right
now. Any sources of nichrome wire are greatly appreciated. From the looks
of it, McMaster sells ~1000 feet at a time in the gauges I am interested in,
which is far more than I want. I will buy it if I have to, but I know I
have seen smaller amounts for sale in other catalogs. By the way, does
anybody know how to get McMaster to send you a catalog? From what I
understand, it is nearly impossible.
Thanks,
--Dan
Original Message
From: Dream Systems One <dreamsystems@c...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, February 26, 2001 7:17 PM
Subject: RE: [noparse][[/noparse]basicstamps] Where to order NICHROME wire?
> Why would you want insulated nichrome wire? It is usually used in cutting
> and sealing plastics. www.mcmaster.com has it and all the other hardware.
>
>
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
heaters that are embedded into flexible printed circuits. These are most
often low power pcb's that are used for temperature stabilization of devices
such as crystal oscillators or heating optical systems for example. What are
you attempting to do? Burt
great website, many thanks to Tom for turning me on to them. My intention
is to heat a fluid inside a small container to about 100° F and sustain that
temperature using a stamp and a DS1620. The device will be use the lowest
voltage that is possible, only your advice or my experimentation will tell
the actual operating voltage. I will use the stamp to continuously check
the current temperature, and turn on the heating element with a switching
transistor if the temperature is below what it should be, and turn off the
element when the temperature is sufficient. For both the DS1620 and the
heating element, I would like them both to be directly immersed in the
fluid, for the most accurate temp reading and for the most efficient
heating. Any info on how the nichrome heating element will interact with a
water based fluid with a ph of 4.8 - 7.8, both chemically and electrically,
would be greatly appreciated. Any tips on electrically insulating the
element from the fluid, if necessary, are also appreciated. My plan for the
DS1620 right now, is to solder some leads to the pins and then coat all
exposed metal surfaces on the IC with a liquid electrical tape found in
hardware stores. Any suggestions are welcome and appreciated.
Thanks,
--Dan
Original Message
From: Dream Systems One <dreamsystems@c...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, February 26, 2001 8:18 PM
Subject: RE: [noparse][[/noparse]basicstamps] Where to order NICHROME wire?
> Dan;
> I have used this type of wire for years in the printing industry. It
always
> gets so hot that it glows red. Even the ultra high temp insulation melts
> after a short period of time. It is always SCR controlled to prevent
> electrocution hazard. My designs usually involve a shunt to prevent
> electrifying the entire machine if the conductor was to break.
>
> Since I have no idea of what you are trying to heat and how, can I at
least
> assume you just want a low voltage solution?
>
> If you would please explain to me a few facts then I can help you.
>
> 1. What do you want to heat?
> 2. What temperature are you looking for?
> 3. What is the temperature response time that you want?
> 4. Do you intend to transfer the heat through a container or utilizing
> direct immersion?
> 5. How would you like to control it?
> 6. Will it be an automated repeat cycle or continuous duty cycle?
>
> If you can answer these questions I can help you with your experiment.
a pile of insulated nichrome in every electric blanket
and old ones can be found in thrift stores for a few bucks.
Wilber Driver [noparse][[/noparse]sp?] Co. makes a variety of heater and
thermocouple wires. Look at Herbach & Rademan for surplus.
For many low temperature heater applications copper wire
is OK and available - higher temperature coefficient and
lower resistance per circular mil but often just fine since
often heater applications are thermostatically controlled
and you can even use the wire to sense temp! [noparse][[/noparse]In between
pulses to heat it...]
>>>>
Date: Mon, 26 Feb 2001 18:23:09 -0800
From: "Dan Gustafson" <dankgus@e...>
Several times I have seen nichrome wire in catalogs, but now that I need
it
I can't seem to find any. Does anybody know where I can find some? I
would
like to experiment with a couple of different gauges in the neighborhood
of
28-30 gauge insulated nichrome, around 10 feet of each, and insulated.
Can
anybody suggest a source?
<<<<
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At 06:23 PM 2/26/01 -0800, you wrote:
>Several times I have seen nichrome wire in catalogs, but now that I need it
>I can't seem to find any. Does anybody know where I can find some? I would
>like to experiment with a couple of different gauges in the neighborhood of
>28-30 gauge insulated nichrome, around 10 feet of each, and insulated. Can
>anybody suggest a source?
>
>Thanks,
>--Dan
>
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
around to fixing ;-)
richard
Original Message
From: "Dan Gustafson" <dankgus@e...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, February 26, 2001 8:23 PM
Subject: [noparse][[/noparse]basicstamps] Where to order NICHROME wire?
> Several times I have seen nichrome wire in catalogs, but now that I need
it
> I can't seem to find any. Does anybody know where I can find some? I
would
> like to experiment with a couple of different gauges in the neighborhood
of
> 28-30 gauge insulated nichrome, around 10 feet of each, and insulated.
Can
> anybody suggest a source?
>
> Thanks,
> --Dan
>
>
>
>
> Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
go to the local hobby store and get them to order some small glass tubes (abt 3
ft ea). I put my wire through the tube and with a propane torch was able to heat
them enough to bend them the way I wanted. Just a thought , Might work for your
problem
Time constant of this system wasn't too good, but that was before we could
implement a PID controller as easily as we can today.
Mike
At 08:41 AM 2/27/2001 -0600, you wrote:
>I built something simular a few years ago (circuit board etcher). What I
>did was
>go to the local hobby store and get them to order some small glass tubes
>(abt 3
>ft ea). I put my wire through the tube and with a propane torch was able
>to heat
>them enough to bend them the way I wanted. Just a thought , Might work for
>your
>problem
>
>
>
>
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
_________________________________
Mike Walsh
walsh@i...
You can avoid the potential problems of altering the Nichrome wire and/or by
shorting it electrically by using an off the shelf heat lamp to heat the
sample to the desired temperature. By electrically insulating the DS1620,
how will that affect the thermal time constant of the device? Is this a
problem or not? What affect(s) will the insulation and water based sample
solution have on each other?
Burt
Have you thought about using off the shelf resistors for your heat
source? For example, a 10 ohm resistor with 12 volts applied will
develop 14.4 watts (e squared/r) which is ideally able to heat 3.4 cc
of water one degree centigrade per second (if I remember my
thermodynamics correctly). A resistor of this type could be switched
with a Crydom DO061 (DigiKey CC1139, $13.85) but you could also use
the Crydom AO241 series ($7.45) with 120VAC and a 100 ohm resistor.
Both interface directly with Stamp output lines.
You might want to look at the stainless steel tubes from Omega as both
heater and temperature sensor mounting. Quarter inch (o.d.) tubes 6
in. long are $6 and can support a TO-92 sensor such as the LM-34.
There is a good paper on these tubes at
http://www.dalsemi.com/news/resources/rcc5_1820.html although it
relates to the Dallas DS1820 sensor (which is the same size). Larger
tubes are available for inserting power resistors. You can use thermal
compound (e.g. heat sink grease from Radio Shack) to conduct the heat
from the resistor to the SS tube. This allows the use of a lower power
resistor but the calculations for how much lower are not obvious.
The LM34DZ ($2.28) and the Maxim MAX-187BCPA ($18.15) from DigiKey are
a very good sensor/analog-digital converter combination. The sensor
develops ten millivolts per degree F and the A/D converter is 12-bits
and 1 mv per count. It is thus able to measure temperature with a
resolution of 0.1 degF. Absoulute accuracy is quite good as well.
The BS2 code for the MAX-187 consists of ten statements and has worked
extremely well for me. The MAX-187 has internal clocking and
sample/hold and is not sensitive to the BS-2 speed. The code I use
takes about 20 milliseconds per reading. I'll be happy to email you
(or anyone else) the BS2 code for this chip/sensor combination. The
MAX-187 also allows an external reference voltage if you want to
change its native conversion scale, but I have not investigated this
feature.
For best results you may want to have some kind of mechanical stirrer
in the beaker so that the sensor can best respond to average solution
temperature.
--- In basicstamps@y..., "Dan Gustafson" <dankgus@e...> wrote:
> Well, I want to experiment with making some small heating elements
and I
> don't want them blazing hot. I am thinking that I might want to
make a
> tight coil and non insulated wire would not electrically make a
tight coil,
> but rather just a chunk of nichrome. I am just experimenting, so a
coil
> might not even be necessary, but it seems like a good idea in my
mind right
> now. Any sources of nichrome wire are greatly appreciated. From
the looks
> of it, McMaster sells ~1000 feet at a time in the gauges I am
interested in,
> which is far more than I want. I will buy it if I have to, but I
know I
> have seen smaller amounts for sale in other catalogs. By the way,
does
> anybody know how to get McMaster to send you a catalog? From what I
> understand, it is nearly impossible.
>
> Thanks,
> --Dan
>
>
Original Message
> From: Dream Systems One <dreamsystems@c...>
> To: <basicstamps@y...>
> Sent: Monday, February 26, 2001 7:17 PM
> Subject: RE: [noparse][[/noparse]basicstamps] Where to order NICHROME wire?
>
>
> > Why would you want insulated nichrome wire? It is usually used in
cutting
> > and sealing plastics. www.mcmaster.com has it and all the other
hardware.
> >
> >
Check out www.minco.com for some interesting fluid immersion heaters (mica,
silicone rubber, kapton, and nomex), along with controllers, in case your
nichrome wire doesn't do the trick.
Dennis
Original Message
From: Dan Gustafson [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=n12Bwiba64kO3O_dj2A-ZAB2zr5SXSppEROr3I_rGAeMTGEGMjvzdswC2drzZ8VuvIDSmyQXMTOC_pu8FcfB]dankgus@e...[/url
Sent: Monday, February 26, 2001 10:46 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] Where to order NICHROME wire?
I just ordered a 50 foot roll of 30ga nichrome wire from omega, they have a
great website, many thanks to Tom for turning me on to them. My intention
is to heat a fluid inside a small container to about 100° F and sustain that
temperature using a stamp and a DS1620. The device will be use the lowest
voltage that is possible, only your advice or my experimentation will tell
the actual operating voltage. I will use the stamp to continuously check
the current temperature, and turn on the heating element with a switching
transistor if the temperature is below what it should be, and turn off the
element when the temperature is sufficient. For both the DS1620 and the
heating element, I would like them both to be directly immersed in the
fluid, for the most accurate temp reading and for the most efficient
heating. Any info on how the nichrome heating element will interact with a
water based fluid with a ph of 4.8 - 7.8, both chemically and electrically,
would be greatly appreciated. Any tips on electrically insulating the
element from the fluid, if necessary, are also appreciated. My plan for the
DS1620 right now, is to solder some leads to the pins and then coat all
exposed metal surfaces on the IC with a liquid electrical tape found in
hardware stores. Any suggestions are welcome and appreciated.
Thanks,
--Dan
Original Message
From: Dream Systems One <dreamsystems@c...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, February 26, 2001 8:18 PM
Subject: RE: [noparse][[/noparse]basicstamps] Where to order NICHROME wire?
> Dan;
> I have used this type of wire for years in the printing industry. It
always
> gets so hot that it glows red. Even the ultra high temp insulation melts
> after a short period of time. It is always SCR controlled to prevent
> electrocution hazard. My designs usually involve a shunt to prevent
> electrifying the entire machine if the conductor was to break.
>
> Since I have no idea of what you are trying to heat and how, can I at
least
> assume you just want a low voltage solution?
>
> If you would please explain to me a few facts then I can help you.
>
> 1. What do you want to heat?
> 2. What temperature are you looking for?
> 3. What is the temperature response time that you want?
> 4. Do you intend to transfer the heat through a container or utilizing
> direct immersion?
> 5. How would you like to control it?
> 6. Will it be an automated repeat cycle or continuous duty cycle?
>
> If you can answer these questions I can help you with your experiment.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/