Try lubing the wires with WD40 or maybe dish soap. Should make them easier to pull, but any sharp edges could still cut them.
I agree with this ^^^, especially the bit I have highlighted red. Do a search on "Ribbon cable wiring". If you are running carpet this will be the answer.
I’ve pulled a lot of wire in the past and it sure felt as I was pulling over a sharp edge or screw. The pull string was a little fuzzy too
I got some of my extra wire at Advance Auto Parts and it worked out well, good quality stuff. I also bought some in bulk from The Wiring Depot. https://www.wiringdepot.com/
Wiring clamps don't need to be complicated, thin stainless or aluminum can be bent to shape to fill your needs.
That gave me an idea, make a simple die and receiver for my little HB press. This is why you guys are awesome
I think I probably had it figured out, but you guys offered some great advice. It’s all about the details, and there are some awesome ones offered up here.