I don't know how some other people clean leads WFP but that brush soft firm or stiff does not work well on any type of lead,I've spoken to a few who have them and we are all of the same view,it's not an opinion a brush either works well or it dosent. If it jumps all over the shop why should you have to be careful in order for it to clean well,it can't have been made with lead light cleaning in mind IMO