First, let me explain that I could start a home building blog but I believe, despite evidence to the contrary, that someday I’ll finish building my house and have nothing new to write about. So, since the house is on the farm, I’ll put house updates here.
That said, I discovered a great tool for cutting fiberglass insulation batts. A well sharpened machete easily cuts through the fiberglass and paper. It’s long enough to prevent the kind of hacking that you’ll have to do with a shorter blade, and it stays sharp longer than a razor. You’ll still have to keep it sharp, so you’ll be spending some time on that, but the advantages are worth it.