Shrink Tubing over Wire and Soldering

[Steve Mavronis]

I'm using some medium thickness wire taken from 1/2 watt resistor leads to use as 3PDT footswitch jumpers. If I put shrink tubing over them what happens when I solder the end points? Will the iron heat melt the shrink tubing off of the wire and make a mess?

Or maybe I shouldn't bother putting shrink tubing on these jumpers but I'll have the same situation with the wires from the LED resistor too.

[John Lyons]

If the jumper is supported solidly at both ends there is no need to insulate it.
Heat shrink should hold up to solder fine though if you want to insulate.
Just try a small piece to be sure. I solder LED resistor leads which touch the
solder joint/heat shrink and have never had a problem.

[Steve Mavronis]

Ok for the jumper going sort of diagonal between lugs from  A1 to B3 there is good clearance so maybe no shrink tube there. I have another metal wire acting as the bypass from A3 to C3 that I'll put clear shrink tube over so it doesn't ground out against side of battery or get bent into lug B3 that is in between.

[stringsthings]

I'm using some medium thickness wire taken from 1/2 watt resistor leads to use as 3PDT footswitch jumpers. If I put shrink tubing over them what happens when I solder the end points? Will the iron heat melt the shrink tubing off of the wire and make a mess?

the heat shrink won't react without enough heat near it .... you can use a blow dryer to shrink the wrap after you apply it ... then it won't "creep" .... [ you can also use a lighter but it can be a bit fiddly ]

from my experience, you stand more of a chance of making a mess with excess solder iron heat and insulation off of regular hookup wire ....