I always use a 0.5mm pencil in the workshop or on site for accurate marking, H pencil for studwork etc, flat carpenters pencil for rough cuts and chalk or a crayon for marking cuts on sawn boards.
Another way I cross cut 8x4s into managable sizes is as follows. I tend to stack my boards vertically on the long edge raised off the floor on 4" high timbers. If I slide one board out the, the end of the boardinfront will be parallel to it. I pull the board out 36mm more than I need (blade kerf & off set from base of saw) then just run my cordless circ saw down the board like a vertical panel saw. Very quick and easy as I can work the circ saw one handed.
Jason
Another way I cross cut 8x4s into managable sizes is as follows. I tend to stack my boards vertically on the long edge raised off the floor on 4" high timbers. If I slide one board out the, the end of the boardinfront will be parallel to it. I pull the board out 36mm more than I need (blade kerf & off set from base of saw) then just run my cordless circ saw down the board like a vertical panel saw. Very quick and easy as I can work the circ saw one handed.
Jason