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How to make a mylar balloon from a space blanket

I want to make a hydrogen balloon and am afraid rubber won't hold the gas in well enough. I was thinking I could make a balloon from a space blanket but am not sure how to connect the edges. I thought maybe I could fuse them with an Iron but am not sure. Will apreciate any help.

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Ironing is a successful technique. You can buy special irons for the purpose.

Steve
nurdee1 (author)  steveastrouk5 years ago
Thankyou very much I am hoping that I can use a standard household iron for this.
Were you successful? I want to do the same thing. Do you have any tips?
I'd say isolate the iron from the mylar with one of those silicone toaster bag things, so you don't melt yuck on the iron !!
nurdee1 (author)  steveastrouk5 years ago
Could you please be more specific I don't understand. Thanks
Probably ironing directly with your clothes iron is a bad idea. put something to protect the iron between it and the mylar.