Hi, I've been using shrink tube to "professionally" repair cables, join them... but I've just been using one kind/brand from my local store. I bought different diameters, and still haven't run out of any of them. The other day I was repairing an audio cable, for headphones, and although the result was nice, my shrink tube gets so hard and rigid, so you have a nice flexible cable and suddenly a straight hard cable. In electric or electronic environments this is not a problem, but sometimes I need a shrink tube that is flexible once it's been heated.
I wonder if you can briefly explain to me the kind of different shrink tubes and its uses. If I search for shrink tube in Amazon or Aliexpress, I get thousands of results but I only see the 2:1 or 3:1 ratio information, that's all the information I get. For example, if I try to replace this headphone's transparent shrink tube (hope you can differentiate where it ends):
I end up with a rigid end, not flexible. So, useless since it can't fit your ear shape. Where do manufacturers get these tubes?
Is it better to have 3:1 ratio or 2:1? Or that's simply a different spec that one should use when required?
I wonder if you can briefly explain to me the kind of different shrink tubes and its uses. If I search for shrink tube in Amazon or Aliexpress, I get thousands of results but I only see the 2:1 or 3:1 ratio information, that's all the information I get. For example, if I try to replace this headphone's transparent shrink tube (hope you can differentiate where it ends):
I end up with a rigid end, not flexible. So, useless since it can't fit your ear shape. Where do manufacturers get these tubes?
Is it better to have 3:1 ratio or 2:1? Or that's simply a different spec that one should use when required?