I tried creating my first inflatable - abstract shape from Mylar:
I used a plastic straw to blow it.
Then I went into rhinocerous, and made a parametric design on grasshoper that I later Laser cut.
Using the settings 100speed 20 power and 50 frequency - resulted in not a perfect seal. see phot for details.
I tried several other cuts changing the power and speed but nothing sealed the mylar permenantly.
I then hand sealed everything with the hot irons and it worked !!!
video