[Elecraft] stripping insulation from enamel wires

[William]

Stripper machines actually sand/ grind off the insulation.  Less chance of nicks.
Burning it off is for the low temp insulation (think is called soldex) and works for commercial applications as the insulation acts like a flux.
Most insulation (enamel, Formvar or polyamides) are high temp, 150-200C rating so much higher temps needed to burn it away.  200C wire can be almost white hot and still survive. 
 Either careful scrap, don’t nick or use fine sand paper.  Tin the bare copper after stripped.  
Bill,  K1BZM

Sent from my iPhone

> On Jun 12, 2020, at 4:58 PM, hawley, charles j jr <c-hawley at illinois.edu> wrote:
> 
> I use a Knipex wire stripping tweezers
> 
> https://www.amazon.com/Knipex-1511120-Coated-Wire-Stripping-Tweezers/dp/B003RWS8XE
> 
> I ordered the 0.5 blade which seems to be best for our small wire.
> Use a light pressure and this thing works great.
> 
> Chuck Jack Hawley
> KE9UW
> 
> Sent from my iPhone, cjack
> 
> On Jun 12, 2020, at 11:25 AM, "QRP5W at roadrunner.com" <QRP5W at roadrunner.com> wrote:
> 
> The old tried and true method is to use an X-acto knife to scrape the
> insulation off with. Simple, not very elegant but it always works.
> 
> 72
> 
> Howard Kraus, K2UD
> 
>   -----------------------------------------From: "Robert G Strickland
> via Elecraft"
> To: elecraft at mailman.qth.net
> Cc:
> Sent: Friday June 12 2020 10:03:58AM
> Subject: [Elecraft] stripping insulation from enamel wires
> 
> Here's an old problem that I've never solved: how to strip the enamel
> insulation from wires for winding toroids.
> 
> The instruction say:
> -dip in a solder pot which I don't have
> -use a soldering iron to, presumably, burn the insulation off which
> has
> never worked for me.
> 
> Leaving soldering pots aside, the hot iron approach has never burned
> off
> any insulation even with tip temp's hovering around 1000F. Just
> doesn't
> happen. Maybe it's the soldering iron, maybe my method, but
> whichever,
> the enamel insulation just sits there. I end up using a file to
> scrape
> off the insulation which is tough on the wires and hard to predict
> when
> enough is enough. Any insightful hints? Thanks much.
> 
> ..robert
> 
> --
> Robert G Strickland, PhD ABPH - KE2WY
> rcrgs at verizon.net.usa
> Syracuse, New York, USA
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