Joined Jan 2011
So I recently made one of my first envelopes by myself, using Mylar I bought from a Hydroponics store. I noticed it deflated rather quickly with just air in it. I am currently sealing the gores like so:
UHU Power Stick
Apply heat using an iron and baking paper (to prevent burning the mylar)
How do you guys seal your envelopes? I found my Iron burned right through the Mylar at 200-250 degrees celcius, and when I put baking paper down to prevent this it just doesn't stick that well (although there is some merger I certainly wouldn't call it airtight).
One of my partners has got a mylar bag 'sealer' that uses 2 sides of heated metal to seal 2 pieces of mylar together, however I also just don't trust how good this is at sealing (and it doesn't seem like it would work well on a blimp, due to the need to be on both sides at once). Do you have any irons that you would recommend?
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