2653Views12Replies

Author Options:

I bought 6 metres of ripstop nylon for my blimp envelope. What is the best way to seal the edges? Answered

I've tried glue, duct tape, and a bit of heat sealing. It doesn't really work.

Discussions

The forums are retiring in 2021 and are now closed for new topics and comments.
0
ANDY!
ANDY!

10 years ago

i decided to use duct tape. It works.

0
orksecurity
orksecurity

10 years ago

Old fabric-surfaced airplanes were stitched and glued, and then sealed with paint, if I remember correctly.

0
orksecurity
orksecurity

Answer 10 years ago

(In fact, according to some recent studies, that might be what took out the Hindenberg -- not the hydrogen at all, but a metallic paint which essentially wound up burning like thermite.)

0
ANDY!
ANDY!

10 years ago

The stuff I have is airproof (or whatever the lingo is).

0
Re-design
Re-design

10 years ago

I've got a different question to you. Is ripstop going to be helium proof? I don't think it is. What are you going to seal it with?

0
rickharris
rickharris

Answer 10 years ago

That's a different question - It's not even air tight (but that wasn't what (S)he asked :-)

The material needs to be light and nylon or Mylar coated and the seams better than air tight if it is all that is holding the Helium.

Of course it may just be a bag to carry helium filled balloons.

0
steveastrouk
steveastrouk

Answer 10 years ago

I THINK you put the lifting cells inside, in mylar bags, but I may be wrong.

0
rickharris
rickharris

Answer 10 years ago

I will expand on my suggestion - Trap the edge of the cloth between two surfaces one on top and one underneath. These should ideally be metallic to act as a heat sink. Leave a couple of millimetres (say 1/10 of an inch) of cloth showing heat this with a candle, match lighter to melt the threads together.

The heat sink will protect the rest of the cloth.

0
lizzyastro
lizzyastro

Answer 10 years ago

A soldering iron works for this too and is easier to guide than a flame.

0
mikeasaurus
mikeasaurus

10 years ago

Fold edge over 1/2" and use a sewing machine to create a finished edge, or if you can use a heat sealer like the pros use.