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Whats kind of heat source for wire shrink tubes do ya use?

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dave(47 8n)

01-16-2000 14:51:03




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I received a package of black plastic like tubing that ya use to seal wire splices instead of using crimps or connectors..what kind of heat source do ya use to shrink these things?..a bic lighter?

dave




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Dieseldog ONT,CAN

02-12-2001 15:26:36




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 Re: Whats kind of heat source for wire shrink tubes do ya use? in reply to dave(47 8n), 01-16-2000 14:51:03  
Dave The first thing you should do is select the right kind of heat shrink tube.You want the heavier double-wall type that wont split as easily on you and has a inner wall of sealer that melts out and seals the connection totally.Some cheaper shrink tubing is single wall and without the sealer and is usless outside or in harsh enviroments and splits too easily when being shrunk.The connection should first be twisted tightly or butt connected with a bare solderable connector and fully soldered with rosin core solder,not acid core or with acid flux or it will react with electrical current and destroy itself.Next cut the shrink tube to a length that extends atleast 1/4" beyond the end of the connection. Once this is done you can go ahead an shrink the tubing with a heat source such as a heat gun or small propane or butane torch making sure the sealer just starts to show and not overheating,burning or splitting the finished repair. This type of connection is suitable for most automotive type repairs and has a low resistance value compatible with most electronics. Good Luck Dieseldog!

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Steve Hansen

01-16-2000 19:58:26




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 Re: Whats kind of heat source for wire shrink tubes do ya use? in reply to dave(47 8n), 01-16-2000 14:51:03  
Dave,

I seem to be using a lot of shrink tubing these days. I find a quick pass with a propane torch usually does the job. Matches and lighters only work when the splice is small. Two things to remember. First, put the shrink tubing on before you make the splice. Second, if you solder the splice (recommended) push the tubing away from the splice. The heat of soldering can cause the tubing to shrink if it is too close.

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brian

01-16-2000 17:23:59




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 Re: Whats kind of heat source for wire shrink tubes do ya use? in reply to dave(47 8n), 01-16-2000 14:51:03  
the proper method is you would fist strip and splice wires buy crimping with a butt splice. the size of the butt is determined by the wire conductor size. be sure to fist slide heat shrink tube over wires and simply apply heat with berzomatic torch. if you have several wires to splice in same heat shrink works better to stager splices so as not to end up with a big ball.



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bo

01-16-2000 17:18:42




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 Re: Whats kind of heat source for wire shrink tubes do ya use? in reply to dave(47 8n), 01-16-2000 14:51:03  
Dave- I've used a Bic, a propane torch, a paint stripping heat gun, bout the only thing that I haven't used is my acetylene torch. The trick is to play the heat over the shrink tubing and not burn it. bo



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catblaster

01-16-2000 16:25:03




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 Re: Whats kind of heat source for wire shrink tubes do ya use? in reply to dave(47 8n), 01-16-2000 14:51:03  
Dave, a heat gun works best, a small propane if you holt it far away so you don't melt the insulation on the wires but please don't use a Bic, they can do nasty things to you hand, chest or your leg.



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clooney

01-16-2000 15:06:32




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 Re: Whats kind of heat source for wire shrink tubes do ya use? in reply to dave(47 8n), 01-16-2000 14:51:03  
Dave, you are supposed to use a heat gun or a little propane torch with a curved end on it. But most people just use a BIC lighter or a match. Just use common sense and try to heat all sides of the "heat shrink" tubing evenly. That stuff is much better than tape.



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RiverRat

01-17-2000 09:12:58




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 Re: Re: Whats kind of heat source for wire shrink tubes do ya use? in reply to clooney , 01-16-2000 15:06:32  
As a boatbuilder, I'll kick in my two cents worth.
The Coast Guard does not reccomend solder connections as they have shown a tendency to break due to heat weakening the copper wire strands. The reccomended procedure is to use a bare crimp connector of the proper size with heat shrink tubing. The safest and best way to shrink the tubing is with an electric heat gun with a curved deflector to surround the tubing with heat. The deflector also protects the surrounding area from excessive heat.

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