Covid Mask strap

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this is the first thing I've ever tried to share, so don't beat me up to bad. i decided to make this because i couldn't find or buy the elastic with the hole in it, like you see in children's clothing. i made it extra long so it should work for anyone. just cut it to the desired length, i would leave at least one extra loop on each end so if the hole breaks you can shift it either way and keep using it. the best suggestion i can give you for printing TPU is print slowly, i'm printing at 25mm second. For example PLA i print at between 75mm and 100mm second. Material: i'm using is Ninjaflex TPU Temperature: 235c Speed: 15mm second first layer / 25mm second after first layer