Is there a hand tool (not power) that can be used to facilitate straight (or angled) cutting of wall studs?
Something similar to this Miter Box, but for larger/heavier woods, such as 2x4 or 2x6 wall studs.
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It only takes a minute to sign up.Sign up to join this community
A handsaw, a square, and practice. While it seems common for folks starting out to reject this option, (practice seems to be out of style) it works. But you need to accept the idea that you'll actually have to make some practice cuts and get in the habit of noticing how the saw is cutting and learn to keep it on track.
A mitre box. You can make one from wood of whatever size you need.