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Apr 02, 2013, 05:05 PM
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Snellville Georgia
Joined Nov 2003
506 Posts
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Mold release for surgical tubing
I am planning to use a surgical (latex) tubing as a bladder in a DLG sized boom. What would work as a mold release that can stretch with the tubing and be reasonably removable / cleanable? I will need to do more bonding in the same area.
What I have in stock is Johnson Paste Wax, Partall #2 paste and Partall Coverall Film. Thanks, Ken |
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Apr 02, 2013, 08:31 PM
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United Kingdom, England, London
Joined Feb 2010
110 Posts
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would suggest vaseline. pretty sure I used this on a latex bladder I made for a DLG fuse and did not have a problem getting the bladder out. Also no issues bonding stuff inside the fuse, with CA or epoxy (wiped with acetone and sanded first)
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Apr 03, 2013, 06:28 PM
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USA, OH, Worthington
Joined May 2002
5,860 Posts
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Latex should not require a release with most epoxy. I use latex balloons on all of my DLG fuses and I've only ever once had a bladder stick.
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Apr 03, 2013, 09:36 PM
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Oregon, USA
Joined Nov 2006
284 Posts
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Hi Ken,
Have you looked into surgical silicone tubing? not sure if size availabilty fits your needs but I am pretty certain you would get an easy release. The balloons Tom mentions (Qualatex 350?) have also worked well for me in a boom mold. They will inflate to 3" diameter but because the mold limits them to 5/8" +/-, the balloon wall doesn't get too thin/fragile under pressure. No failures yet during cure or removal. With so many hits and misses making traditional rolled booms, a mold was well worth the effort. Gave away all of my rolling fixtures after the first pull...  Craig |
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Apr 03, 2013, 09:46 PM
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USA, OH, Worthington
Joined May 2002
5,860 Posts
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I switched from the 350s to 260s but yes... still using qua latex and have done hundreds of them.
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