custard
Established Member
I struggle with the harder leads because they seem that bit more brittle. It's one thing if you're marking up an ultra smooth timber like Swiss Pear, but when you get to a more open grained timber like say Oak then a 2H lead keeps dropping into the grain and snapping off. Therefore personally I use a 2B lead in a propelling pencil, the virtue of a propelling pencil is that it has a constant line thickness, so it doesn't matter if it wears down. The other significant advantage of softer leads is that they're much darker, which makes it easier to see your layout lines and not wander past them!
Another option to consider is those ultra thick propelling pencils (much thicker than the lead in a regular pencil) that have either a built in or a separate sharpener. I know a couple of very fine cabinet makers who swear by them, they use a very soft lead and sharpen them up for precision layout work, but then let them run blunt for marking up rough sawn timber or adding face/edge symbols.
Another option to consider is those ultra thick propelling pencils (much thicker than the lead in a regular pencil) that have either a built in or a separate sharpener. I know a couple of very fine cabinet makers who swear by them, they use a very soft lead and sharpen them up for precision layout work, but then let them run blunt for marking up rough sawn timber or adding face/edge symbols.