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December 18, 2018, 01:24:57 pm

Author Topic: Heat Shrink Problem  (Read 479 times)

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Offline L0rdGwyn

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Heat Shrink Problem
« on: May 16, 2018, 09:58:00 am »
Just put together this power cord.  Everything was going swimmingly, but after heating the shrink with my heat gun, the shrink did not stay in position and peeled back from both connectors leaving a goopy adhesive mess on both ends.  I wasn't aware there was an adhesive on the interior.  Any suggestions for a fix?  Given that there is an adhesive I imagine that if I wanted to replace it the techflex is done for...what a headache.
« Last Edit: May 16, 2018, 10:00:51 am by L0rdGwyn »
Keenan McKnight

Offline Doc B.

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Re: Heat Shrink Problem
« Reply #1 on: May 16, 2018, 10:25:42 am »
Have not seen that happen before. I'd suggest getting another piece of non adhesive shrink, and shrinking that over the existing shrink and exposed glue.
Dan "Doc B." Schmalle
President For Life
Bottlehead Corp.

Offline L0rdGwyn

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Re: Heat Shrink Problem
« Reply #2 on: May 16, 2018, 02:53:38 pm »
Thanks Doc, I'm gonna give that a shot, picked up some new techflex too.  Do you mind telling me what the dimensions of the included shrink are so I can get a replacement without adhesive?
Keenan McKnight

Offline oguinn

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Re: Heat Shrink Problem
« Reply #3 on: July 12, 2018, 05:43:51 pm »
I’d like to know the size of the shrink also. I melted a bit of the techflex and was hoping to cover my shame with heat shrink. It looks like it was maybe 1.75” but that didn’t return anything at digiket that I could see.
« Last Edit: July 12, 2018, 05:47:58 pm by oguinn »
Jameson O’Guinn

Offline Paul Birkeland

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Re: Heat Shrink Problem
« Reply #4 on: July 12, 2018, 05:54:32 pm »
It's not the size that matters  :P but how much it shrinks  :'( and whether it is sticky  ???

Seriously though, we pay almost $50 per piece for this stuff, unless you want to end up with a whole lot of surplus, I'd drop replacementparts(at)bottlehead(dot)com an e-mail to ask about getting an additional piece. 
Paul "PB" Birkeland

Bottlehead Grunt & The Repro Man

Offline oguinn

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Re: Heat Shrink Problem
« Reply #5 on: July 12, 2018, 05:56:51 pm »
Fair enough. I’ll drop a line. Thanks!
Jameson O’Guinn

Offline Deluk

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Re: Heat Shrink Problem
« Reply #6 on: July 13, 2018, 02:25:24 am »
Shrink it down over the lumpy bits first and let that cool just a bit before working your way down the smooth part. Go slow. Less heat, more distance and a smaller nozzle help. General purpose heat guns can be a bit ferocious and it can be difficult to get just the right amount of heat where you want it. There are specialist heat guns just for this job which have heat and speed controls plus various end caps. Doc may have one but most people won't.