Yeah, nothing stick to sil very easily. When I am cutting ripstop and other fabrics I will sometimes tape the fabric down to the work surface to keep it from moving around. I tried that with sil with no luck. I tried Duct tape, masking tape, double sided tape, etc and it just wouldn't stick.
“Light thinks it travels faster than anything but it is wrong. No matter how fast light travels, it finds the darkness has always got there first, and is waiting for it."