Home-Made IEMs
Jun 23, 2021 at 10:21 PM Post #12,905 of 15,989
Easy way to stretch tubes is to put a pair of tweezers inside, heat up the tube then insert a small rod (screwdriver) and push towards the fixed side of the tweezers, to add force that spreads the tips. Let cool, but it will still shrink slowly after that, so a few cycles of stretching is necessary.
 
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Jun 23, 2021 at 10:47 PM Post #12,906 of 15,989
Heat shrink tubing is also good for this, find one that the un shrunk diameter fits on the body of the BA, 3:1 works best but 2:1 can also work, try to find thin wall if possible. First shrink a length of the tube separately (DO NOT heat the BA with the tube around it) and then UV glue or B7000 the tube to the BA body

This is 2x dual 32257 with tweezer expanded tube (1mm ID) and a 31736 with heat shrink tube pre shrunk and UV glued as described above (1.5 or 2mm ID after shrinking, sorry I don't recall exactly, just see what fits.)

20210207_233527.jpg

Tubing is cheap, grab a lot of different options so you have stuff to work with.
 
Jun 23, 2021 at 11:19 PM Post #12,907 of 15,989
Heat shrink tubing is also good for this, find one that the un shrunk diameter fits on the body of the BA, 3:1 works best but 2:1 can also work, try to find thin wall if possible. First shrink a length of the tube separately (DO NOT heat the BA with the tube around it) and then UV glue or B7000 the tube to the BA body

This is 2x dual 32257 with tweezer expanded tube (1mm ID) and a 31736 with heat shrink tube pre shrunk and UV glued as described above (1.5 or 2mm ID after shrinking, sorry I don't recall exactly, just see what fits.)

20210207_233527.jpg

Tubing is cheap, grab a lot of different options so you have stuff to work with.
Thanks for the tips, yeah I bought some 1x2, 2x3, 1.3x2.3, 1.5x2.5. Hope these are enough.
 
Jun 24, 2021 at 7:51 PM Post #12,909 of 15,989
Jun 25, 2021 at 10:22 AM Post #12,911 of 15,989
Has anyone used those? They have a "raw" finish, and look like they need lacquer or resin before you could use them.
Yes they need lack3. I think all shells need it, to be bio safe.
 

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