Thought I could improve on my own by doing something along those lines.
Mine still comes in at 1.6 ounces and 1.63 ounces with the carabiner to hook it to my molle pack.
Your design is obviously for the long run, however I think the blade itself will runn out before my paracord does. I have a pretty solid bond with one layer of the paracord using Gorilla Glue.
Though for the weight, I could carry an extra blade at .8 ounces and re-utilize the paracord in case my blade broke. Only the first layer is lost due to the glue. There is 4 feet of paracord that is easily removed if needed.
Great little contraptions though arent they. I just went outside and sawed a few 3 inch trees just for the hell of it. Just like butter!
10-12 seconds per
(edit) with a little pushing force