I just want to open a box without tearing it to pieces.
also plastic bags ever since ultrasonic welding became more widespread. now the seam is as strong or stronger than the surrounding plastic so you can't just pull the seam apart for a clean edge like you could with most heat-sealed edges
Yeah I've honestly started just using my scalpels I have for 3d printing to open any of those plastic sealed containers. It's getting out of hand.
also plastic bags ever since ultrasonic welding became more widespread. now the seam is as strong or stronger than the surrounding plastic so you can't just pull the seam apart for a clean edge like you could with most heat-sealed edges
Yeah I've honestly started just using my scalpels I have for 3d printing to open any of those plastic sealed containers. It's getting out of hand.