Bob Wilson wrote:
On 8/15/2018 4:56 PM, Ralph Mowery wrote:



Where can I buy some small wire ( about # 28 to 30 ) that has the enamel
type of insulation that can be soldered and the heat will melt the
insulation ? There was some on ebay I bought that did not seem to work.
After checking it out, it seems that it needs to be heated to almost 400
deg C and when I tried that, it did not do all that well.

I would like it to melt out with a more normal 300 deg C or so iron.

The object is to use it on a circuit board to build small projects.


It used to be sold on small spools for use in simple wire-wrap
construction, not needing fancy wire-wrap tools.

Special wire existed, of course very expensive, but I have always
used regular coil winding wire from the local electronics shop.
The guys there know what you need and what makes of wire are suitable.

Coincidentally, the shop is closing down right now. Like most of
them already have.

On 08/17/18 08:37, Rob wrote:


Special wire existed, of course very expensive, but I have always
used regular coil winding wire from the local electronics shop.
The guys there know what you need and what makes of wire are suitable.

Coincidentally, the shop is closing down right now. Like most of
them already have.

I worked for a transformer company decades ago and they used wire that
stripped & tinned in a solder pot. Standard transformer wire for that
company at the time, as it saved time in production. Have a word
with your local transformer company or stockist...

Chris

Chris wrote:
On 08/17/18 08:37, Rob wrote:


Special wire existed, of course very expensive, but I have always
used regular coil winding wire from the local electronics shop.
The guys there know what you need and what makes of wire are suitable.

Coincidentally, the shop is closing down right now. Like most of
them already have.

I worked for a transformer company decades ago and they used wire that
stripped & tinned in a solder pot. Standard transformer wire for that
company at the time, as it saved time in production. Have a word
with your local transformer company or stockist...

Yes that is the kind of wire I used. It was a little easier to pre-tin
it on the iron but when working with ICs in DIP package it usually was
enough to do a half turn of the wire around the pin, clip it, and solder.

But it varies between makes of wire. With the real "enamelled" wire
this doesn't work.

In article ,
says...

But it varies between makes of wire. With the real "enamelled" wire
this doesn't work.



I may have used the 'enamelled' type wire, but yes, the real insulation
of that type it will not 'strip' with solder.

There are many types of insulation that look like or similar to
enammelled wire, but are very different.

In article ,
says...

I worked for a transformer company decades ago and they used wire that
stripped & tinned in a solder pot. Standard transformer wire for that
company at the time, as it saved time in production. Have a word
with your local transformer company or stockist...

Chris



Most of that wire needs around 400 deg C of heat to melt the insulation
for soldering. Way too much for circuit board work.
I bought some wire off ebay that was listed as solderable insulation.
Found out after I tried it that it required 390 deg C to melt the
insulation from the wire web page.

They list that type of wire as something like 155 deg C wire, but found
out that is the rated working temperature, not the soldering
temperature.