Trying to pirate a physical book. Where do I get thinner printer paper?

I need to pirate this book thats over 1000 pages. I already have the pdf but I really want a physical copy and the book costs too much for me. Even if I have to buy a bunch of ink (the book has no pictures) and even if I wear out the printhead before the job is done, it's still going to be cheaper to do this. My printer has been blocked from the internet since before the pandemic so I can install all the 3rd party ink and replacement parts I want. I'm not worried about my printer situation.

It seems the biggest challenge I need to overcome is the paper. Cheap printer paper is going to otherwise work it's just that it's too thick. The same amount of cheap printer paper it takes to make the book is going to be more than twice as thick as the book I'm trying to "pirate".

The 8.5x11in size just happens to be the exact size I need for this. Whats the cheapest paper I can get that's still thinner than cheapo office printer paper?