Most people just clamp a level to the piece of work to use as a guide. Those tend to be straighter than a bit of tarry old board and less time consuming to make, because they are already made.
But yes, circulars are practically useless for precision work without them.
Most people just clamp a level to the piece of work to use as a guide. Those tend to be straighter than a bit of tarry old board and less time consuming to make, because they are already made.
But yes, circulars are practically useless for precision work without them.